Finding the Third Proportional to 131,098.50 and 287,469

Step by Step Solution

1. Step 1: Write the proportion equation
   131,098.50 : 287,469 = 287,469 : x
2. Step 2: Convert to fraction form
   131,098.50/287,469 = 287,469/x
3. Step 3: Cross multiply
   131,098.50x = 287,469 × 287,469
4. Step 4: Simplify right side
   131,098.50x = 82,638,425,961
5. Step 5: Solve for x
   x = 82,638,425,961/131,098.50
6. Step 6: Final answer
   x = 630,353.71