Finding the Third Proportional to 57,208.78 and 87,514.17

Step by Step Solution

1. Step 1: Write the proportion equation
   57,208.78 : 87,514.17 = 87,514.17 : x
2. Step 2: Convert to fraction form
   57,208.78/87,514.17 = 87,514.17/x
3. Step 3: Cross multiply
   57,208.78x = 87,514.17 × 87,514.17
4. Step 4: Simplify right side
   57,208.78x = 7,658,730,278.97
5. Step 5: Solve for x
   x = 7,658,730,278.97/57,208.78
6. Step 6: Final answer
   x = 133,873.33