Finding the Third Proportional to 131,099.50 and 287,471

Step by Step Solution

1. Step 1: Write the proportion equation
   131,099.50 : 287,471 = 287,471 : x
2. Step 2: Convert to fraction form
   131,099.50/287,471 = 287,471/x
3. Step 3: Cross multiply
   131,099.50x = 287,471 × 287,471
4. Step 4: Simplify right side
   131,099.50x = 82,639,575,841
5. Step 5: Solve for x
   x = 82,639,575,841/131,099.50
6. Step 6: Final answer
   x = 630,357.67