Finding the Third Proportional to 12,162.38 and 15,540.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,162.38 : 15,540.75 = 15,540.75 : x
2. Step 2: Convert to fraction form
   12,162.38/15,540.75 = 15,540.75/x
3. Step 3: Cross multiply
   12,162.38x = 15,540.75 × 15,540.75
4. Step 4: Simplify right side
   12,162.38x = 241,514,910.56
5. Step 5: Solve for x
   x = 241,514,910.56/12,162.38
6. Step 6: Final answer
   x = 19,857.55