Finding the Third Proportional to 131,476.50 and 287,831.25

Step by Step Solution

1. Step 1: Write the proportion equation
   131,476.50 : 287,831.25 = 287,831.25 : x
2. Step 2: Convert to fraction form
   131,476.50/287,831.25 = 287,831.25/x
3. Step 3: Cross multiply
   131,476.50x = 287,831.25 × 287,831.25
4. Step 4: Simplify right side
   131,476.50x = 82,846,828,476.56
5. Step 5: Solve for x
   x = 82,846,828,476.56/131,476.50
6. Step 6: Final answer
   x = 630,126.51