Question

Find the mean promotional between 28 and 63. ​

Answer 1

42

Explanation:

mean proportion of 28, 63

28×63 =1764

the square root of 1746 is 42

Answer 2

`\qquad\huge\pink{\boxed{\sf Answer}}`

• 28 , x , 63
• 23 : x : x : 63

`\mathfrak\longmapsto ad \: = bc \:`

`\mathfrak\longmapsto 28 * 63 = * x *`

`\mathfrak\longmapsto 2 * 2 * 7 * 7 * 3 * 3 = * x *`

`\mathfrak\longmapsto 2 * 7 * 3 = x`

`\mathfrak\longmapsto 42 = x`

`\sf hence \: the \: proportional \: difference \: = \: 42`

Hope it helps ~