Finding the Third Proportional to 111,656 and 239,488

Step by Step Solution

1. Step 1: Write the proportion equation
   111,656 : 239,488 = 239,488 : x
2. Step 2: Convert to fraction form
   111,656/239,488 = 239,488/x
3. Step 3: Cross multiply
   111,656x = 239,488 × 239,488
4. Step 4: Simplify right side
   111,656x = 57,354,502,144
5. Step 5: Solve for x
   x = 57,354,502,144/111,656
6. Step 6: Final answer
   x = 513,671.47