The mean proportional between (3 + √2) and (12 - √32) is:

मध्यानुपाती = √[(3 + √2) * (12 - √32)]। ध्यान दें √32 = 4√2। तो (12 - 4√2) = 4(3 - √2)। गुणनफल = (3 + √2) * 4(3 - √2) = 4 * (9 - 2) = 4 * 7 = 28। 28 का वर्गमूल = √28 = 2√7।