Finding the Third Proportional to 15,139.50 and 26,217.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,139.50 : 26,217.38 = 26,217.38 : x
2. Step 2: Convert to fraction form
   15,139.50/26,217.38 = 26,217.38/x
3. Step 3: Cross multiply
   15,139.50x = 26,217.38 × 26,217.38
4. Step 4: Simplify right side
   15,139.50x = 687,350,751.89
5. Step 5: Solve for x
   x = 687,350,751.89/15,139.50
6. Step 6: Final answer
   x = 45,401.15