The next line is
first 10-digit prime in e).com
(it goes infinitely on, without systematic repetition: each sequence of ten digits is essentially random.)
The first ten-digit number to the right of the decimal point, 7182818284, can't be a prime number because it ends in an even number and so is divisible by 2, and possibly other numbers, too. The next ten-digit number, 1828182845, ends in 5: divisible by, at the least, 5. But eventually, there will be a prime among them.
For a few weeks after the appearance of the puzzle "7427466391.com" was the URL for a web site that invited those who got there to solve another puzzle, and then the answer to that puzzle was the password to enter yet another website which was an invitation to send in a CV and further explore the possibility of working for Google. A person who can solve those puzzles is a person of interest to Google.
The location of the answer:
The second puzzle:
rests on a foundation of several principles that often evade understanding.
For example: Advertising, our most prevalent use of communication, uses
information in ways opposite to, and often inimical to, science.
Searching for disconfirmations is the prime rule in science; convincing
that the slightest bit of confirming evidence is sufficient to believe
what we want to believe is the way of advertising. And, science is
usually abstract knowledge, but abstraction is usually understood to be
"not real." That's a sure sign that the substance of the science was "not
seen." Furthermore, the abstract principle often shows the seer that
something, though widely believed, could not possibly be. Impossibility
Six keys to effective thinking
Think about it...