Finding the Third Proportional to 259,528 and 557,850

Step by Step Solution

1. Step 1: Write the proportion equation
   259,528 : 557,850 = 557,850 : x
2. Step 2: Convert to fraction form
   259,528/557,850 = 557,850/x
3. Step 3: Cross multiply
   259,528x = 557,850 × 557,850
4. Step 4: Simplify right side
   259,528x = 311,196,622,500
5. Step 5: Solve for x
   x = 311,196,622,500/259,528
6. Step 6: Final answer
   x = 1,199,086.89