Finding the Third Proportional to 131,503.50 and 287,613

Step by Step Solution

1. Step 1: Write the proportion equation
   131,503.50 : 287,613 = 287,613 : x
2. Step 2: Convert to fraction form
   131,503.50/287,613 = 287,613/x
3. Step 3: Cross multiply
   131,503.50x = 287,613 × 287,613
4. Step 4: Simplify right side
   131,503.50x = 82,721,237,769
5. Step 5: Solve for x
   x = 82,721,237,769/131,503.50
6. Step 6: Final answer
   x = 629,042.10