Finding the Third Proportional to 131,969.25 and 287,761.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,969.25 : 287,761.50 = 287,761.50 : x
2. Step 2: Convert to fraction form
   131,969.25/287,761.50 = 287,761.50/x
3. Step 3: Cross multiply
   131,969.25x = 287,761.50 × 287,761.50
4. Step 4: Simplify right side
   131,969.25x = 82,806,680,882.25
5. Step 5: Solve for x
   x = 82,806,680,882.25/131,969.25
6. Step 6: Final answer
   x = 627,469.51