Finding the Third Proportional to 111,649 and 240,790

Step by Step Solution

1. Step 1: Write the proportion equation
   111,649 : 240,790 = 240,790 : x
2. Step 2: Convert to fraction form
   111,649/240,790 = 240,790/x
3. Step 3: Cross multiply
   111,649x = 240,790 × 240,790
4. Step 4: Simplify right side
   111,649x = 57,979,824,100
5. Step 5: Solve for x
   x = 57,979,824,100/111,649
6. Step 6: Final answer
   x = 519,304.46