Finding the Third Proportional to 111,499 and 240,494

Step by Step Solution

1. Step 1: Write the proportion equation
   111,499 : 240,494 = 240,494 : x
2. Step 2: Convert to fraction form
   111,499/240,494 = 240,494/x
3. Step 3: Cross multiply
   111,499x = 240,494 × 240,494
4. Step 4: Simplify right side
   111,499x = 57,837,364,036
5. Step 5: Solve for x
   x = 57,837,364,036/111,499
6. Step 6: Final answer
   x = 518,725.41