Finding the Third Proportional to 131,311.13 and 256,061.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,311.13 : 256,061.25 = 256,061.25 : x
2. Step 2: Convert to fraction form
   131,311.13/256,061.25 = 256,061.25/x
3. Step 3: Cross multiply
   131,311.13x = 256,061.25 × 256,061.25
4. Step 4: Simplify right side
   131,311.13x = 65,567,363,751.56
5. Step 5: Solve for x
   x = 65,567,363,751.56/131,311.13
6. Step 6: Final answer
   x = 499,328.32