Finding the Third Proportional to 15,452.50 and 20,718.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,452.50 : 20,718.38 = 20,718.38 : x
2. Step 2: Convert to fraction form
   15,452.50/20,718.38 = 20,718.38/x
3. Step 3: Cross multiply
   15,452.50x = 20,718.38 × 20,718.38
4. Step 4: Simplify right side
   15,452.50x = 429,251,062.64
5. Step 5: Solve for x
   x = 429,251,062.64/15,452.50
6. Step 6: Final answer
   x = 27,778.75