Finding the Third Proportional to 123,528 and 251,418

Step by Step Solution

1. Step 1: Write the proportion equation
   123,528 : 251,418 = 251,418 : x
2. Step 2: Convert to fraction form
   123,528/251,418 = 251,418/x
3. Step 3: Cross multiply
   123,528x = 251,418 × 251,418
4. Step 4: Simplify right side
   123,528x = 63,211,010,724
5. Step 5: Solve for x
   x = 63,211,010,724/123,528
6. Step 6: Final answer
   x = 511,714.03