Finding the Third Proportional to 111,892 and 243,459

Step by Step Solution

1. Step 1: Write the proportion equation
   111,892 : 243,459 = 243,459 : x
2. Step 2: Convert to fraction form
   111,892/243,459 = 243,459/x
3. Step 3: Cross multiply
   111,892x = 243,459 × 243,459
4. Step 4: Simplify right side
   111,892x = 59,272,284,681
5. Step 5: Solve for x
   x = 59,272,284,681/111,892
6. Step 6: Final answer
   x = 529,727.64