Finding the Third Proportional to 111,542 and 243,110

Step by Step Solution

1. Step 1: Write the proportion equation
   111,542 : 243,110 = 243,110 : x
2. Step 2: Convert to fraction form
   111,542/243,110 = 243,110/x
3. Step 3: Cross multiply
   111,542x = 243,110 × 243,110
4. Step 4: Simplify right side
   111,542x = 59,102,472,100
5. Step 5: Solve for x
   x = 59,102,472,100/111,542
6. Step 6: Final answer
   x = 529,867.42