Question

Find the Mean Proportional Between 3 and 12​

Answer 1

Answer:

Let the middle number be X

then,3 X 12

we know that,

mean proportion is 3/X=X/12

X^2=3×12

X=√36

X=6

Answer 2

Step-by-step explanation:

let the middle two numbers be x

3:x::x:12

= 3/x×x/12

let the xx be 2x

2x = 12×3

2x = 36

now take the square root of 36

= 6 is the square root of 36

so 6 is the answer