Finding the Third Proportional to 31,563,116.50 and 67,920,137

Step by Step Solution

1. Step 1: Write the proportion equation
   31,563,116.50 : 67,920,137 = 67,920,137 : x
2. Step 2: Convert to fraction form
   31,563,116.50/67,920,137 = 67,920,137/x
3. Step 3: Cross multiply
   31,563,116.50x = 67,920,137 × 67,920,137
4. Step 4: Simplify right side
   31,563,116.50x = 4,613,145,010,098,769
5. Step 5: Solve for x
   x = 4,613,145,010,098,769/31,563,116.50
6. Step 6: Final answer
   x = 146,156,195.00