Finding the Third Proportional to 90,569,716 and 139,377,966

Step by Step Solution

1. Step 1: Write the proportion equation
   90,569,716 : 139,377,966 = 139,377,966 : x
2. Step 2: Convert to fraction form
   90,569,716/139,377,966 = 139,377,966/x
3. Step 3: Cross multiply
   90,569,716x = 139,377,966 × 139,377,966
4. Step 4: Simplify right side
   90,569,716x = 19,426,217,406,297,156
5. Step 5: Solve for x
   x = 19,426,217,406,297,156/90,569,716
6. Step 6: Final answer
   x = 214,489,105.90