Finding the Third Proportional to 111,459 and 240,414

Step by Step Solution

1. Step 1: Write the proportion equation
   111,459 : 240,414 = 240,414 : x
2. Step 2: Convert to fraction form
   111,459/240,414 = 240,414/x
3. Step 3: Cross multiply
   111,459x = 240,414 × 240,414
4. Step 4: Simplify right side
   111,459x = 57,798,891,396
5. Step 5: Solve for x
   x = 57,798,891,396/111,459
6. Step 6: Final answer
   x = 518,566.39