If a, b, c be in AP, b, c, d be in GP and c, d, e be in HP, prove that a, c, e are in GP.
If a, b, c be in AP, b, c, d be in GP and c, d, e be in HP, prove that a, c, e are in GP.
If a, b, c be in AP, b, c, d be in GP and c, d, e be in HP, prove that a, c, e are in GP.