Finding the Third Proportional to 111,713 and 243,499

Step by Step Solution

1. Step 1: Write the proportion equation
   111,713 : 243,499 = 243,499 : x
2. Step 2: Convert to fraction form
   111,713/243,499 = 243,499/x
3. Step 3: Cross multiply
   111,713x = 243,499 × 243,499
4. Step 4: Simplify right side
   111,713x = 59,291,763,001
5. Step 5: Solve for x
   x = 59,291,763,001/111,713
6. Step 6: Final answer
   x = 530,750.79