The mean proportional between 234 and 104 is Choose the correct choice from the following answers:
A) 12
B) 39
C) 54
D) 156
E) None
Sol.   Required mean proportional = √234 x 104   = √13x9x2x13x8 = (13x3x4) = 156.   Answer 156
<result>D</result>
The mean proportional between 234 and 104 is