Finding the Third Proportional to 259,521.75 and 557,838

Step by Step Solution

1. Step 1: Write the proportion equation
   259,521.75 : 557,838 = 557,838 : x
2. Step 2: Convert to fraction form
   259,521.75/557,838 = 557,838/x
3. Step 3: Cross multiply
   259,521.75x = 557,838 × 557,838
4. Step 4: Simplify right side
   259,521.75x = 311,183,234,244
5. Step 5: Solve for x
   x = 311,183,234,244/259,521.75
6. Step 6: Final answer
   x = 1,199,064.18