Question

find mean proportion between1/2 and 1/72

Answer 1

Let it be a.

1/2/a=a/1/72

a^2=1/72*2

a^2=1/144

a=+1/12

or

-1/12

Hope it helps mate!

Answer 2

Answer:

Let x be the mean proportional between 1/2 and 1/72 .

1/2:x::x:1/72.

x^2=1/2*1/72

x^2=1/2*1/6

x^2=1/12