Solution:x को 29,45,38,62 में से घटाने पर संख्या क्रमशः (29-x), (45-x), (38-x), (62-x)प्रश्नानुसार,
(29 - x) / (45 - x) ::(38-x)(62-x)
(29 - x)(62 - x) = (45 - x)(38 - x)
1798 - 29x - 62x + x ² = 1710 - 45x - 38x + x ²
1798 - 91x = 1710 - 83x
- 8x = - 88
x = 11
अब, 2x + 5 = 2 x 11 + 5 = 27
x - 7 = 11 - 7 = 4
मध्यानुपाती = √(27 x 4)
= 6√3