Finding the Third Proportional to 31,156,422 and 68,291,436

Step by Step Solution

1. Step 1: Write the proportion equation
   31,156,422 : 68,291,436 = 68,291,436 : x
2. Step 2: Convert to fraction form
   31,156,422/68,291,436 = 68,291,436/x
3. Step 3: Cross multiply
   31,156,422x = 68,291,436 × 68,291,436
4. Step 4: Simplify right side
   31,156,422x = 4,663,720,230,942,096
5. Step 5: Solve for x
   x = 4,663,720,230,942,096/31,156,422
6. Step 6: Final answer
   x = 149,687,285.37