Finding the Third Proportional to 131,773.50 and 287,398.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,773.50 : 287,398.50 = 287,398.50 : x
2. Step 2: Convert to fraction form
   131,773.50/287,398.50 = 287,398.50/x
3. Step 3: Cross multiply
   131,773.50x = 287,398.50 × 287,398.50
4. Step 4: Simplify right side
   131,773.50x = 82,597,897,802.25
5. Step 5: Solve for x
   x = 82,597,897,802.25/131,773.50
6. Step 6: Final answer
   x = 626,817.21