Finding the Third Proportional to 8,391,485,413,342 and 18,260,607,451,429

Step by Step Solution

1. Step 1: Write the proportion equation
   8,391,485,413,342 : 18,260,607,451,429 = 18,260,607,451,429 : x
2. Step 2: Convert to fraction form
   8,391,485,413,342/18,260,607,451,429 = 18,260,607,451,429/x
3. Step 3: Cross multiply
   8,391,485,413,342x = 18,260,607,451,429 × 18,260,607,451,429
4. Step 4: Simplify right side
   8,391,485,413,342x = 333,449,784,495,184,343,726,030,848
5. Step 5: Solve for x
   x = 333,449,784,495,184,343,726,030,848/8,391,485,413,342
6. Step 6: Final answer
   x = 39,736,681,656,505.95