Finding the Third Proportional to 140,358.50 and 215,744

Step by Step Solution

1. Step 1: Write the proportion equation
   140,358.50 : 215,744 = 215,744 : x
2. Step 2: Convert to fraction form
   140,358.50/215,744 = 215,744/x
3. Step 3: Cross multiply
   140,358.50x = 215,744 × 215,744
4. Step 4: Simplify right side
   140,358.50x = 46,545,473,536
5. Step 5: Solve for x
   x = 46,545,473,536/140,358.50
6. Step 6: Final answer
   x = 331,618.49