Finding the Third Proportional to 123,514.50 and 251,403

Step by Step Solution

1. Step 1: Write the proportion equation
   123,514.50 : 251,403 = 251,403 : x
2. Step 2: Convert to fraction form
   123,514.50/251,403 = 251,403/x
3. Step 3: Cross multiply
   123,514.50x = 251,403 × 251,403
4. Step 4: Simplify right side
   123,514.50x = 63,203,468,409
5. Step 5: Solve for x
   x = 63,203,468,409/123,514.50
6. Step 6: Final answer
   x = 511,708.90