Finding the Third Proportional to 108,721 and 239,514.50

Step by Step Solution

1. Step 1: Write the proportion equation
   108,721 : 239,514.50 = 239,514.50 : x
2. Step 2: Convert to fraction form
   108,721/239,514.50 = 239,514.50/x
3. Step 3: Cross multiply
   108,721x = 239,514.50 × 239,514.50
4. Step 4: Simplify right side
   108,721x = 57,367,195,710.25
5. Step 5: Solve for x
   x = 57,367,195,710.25/108,721
6. Step 6: Final answer
   x = 527,655.15