Finding the Third Proportional to 131,385.75 and 200,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,385.75 : 200,359.50 = 200,359.50 : x
2. Step 2: Convert to fraction form
   131,385.75/200,359.50 = 200,359.50/x
3. Step 3: Cross multiply
   131,385.75x = 200,359.50 × 200,359.50
4. Step 4: Simplify right side
   131,385.75x = 40,143,929,240.25
5. Step 5: Solve for x
   x = 40,143,929,240.25/131,385.75
6. Step 6: Final answer
   x = 305,542.49