Find the mean proportional between 7921 & 9409?	Pick one.
A) 8163  B) 8633  C) 8663  D) 8636  E) None of these
Explanation:   Formula = √a×b   A = 7921 and 8633 = 9409   √7921×9409 = 89 × 97 = 8633   Answer: Option 8633
<result>B</result>
Find the mean proportional between 7921 & 9409?