Come up with a question and stream of consciousness reasoning that would justify this answer: (A)

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The question is: Find the mean proportional between 36 & 49?
Options:
(A) A) 42
(B) B) 61
(C) C) 63
(D) D) 65
(E) E) 67
Stream of consciousness: Formula = √a×b
A = 36 and B = 49
√36×49 = 6 × 7 = 42
