Finding the Third Proportional to 257,828 and 555,150

Step by Step Solution

1. Step 1: Write the proportion equation
   257,828 : 555,150 = 555,150 : x
2. Step 2: Convert to fraction form
   257,828/555,150 = 555,150/x
3. Step 3: Cross multiply
   257,828x = 555,150 × 555,150
4. Step 4: Simplify right side
   257,828x = 308,191,522,500
5. Step 5: Solve for x
   x = 308,191,522,500/257,828
6. Step 6: Final answer
   x = 1,195,337.68