Finding the Third Proportional to 31,003,131 and 72,414,286.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,003,131 : 72,414,286.50 = 72,414,286.50 : x
2. Step 2: Convert to fraction form
   31,003,131/72,414,286.50 = 72,414,286.50/x
3. Step 3: Cross multiply
   31,003,131x = 72,414,286.50 × 72,414,286.50
4. Step 4: Simplify right side
   31,003,131x = 5,243,828,889,304,082
5. Step 5: Solve for x
   x = 5,243,828,889,304,082/31,003,131
6. Step 6: Final answer
   x = 169,138,687.62