Finding the Third Proportional to 10,149.50 and 15,609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,149.50 : 15,609.50 = 15,609.50 : x
2. Step 2: Convert to fraction form
   10,149.50/15,609.50 = 15,609.50/x
3. Step 3: Cross multiply
   10,149.50x = 15,609.50 × 15,609.50
4. Step 4: Simplify right side
   10,149.50x = 243,656,490.25
5. Step 5: Solve for x
   x = 243,656,490.25/10,149.50
6. Step 6: Final answer
   x = 24,006.75