Finding the Third Proportional to 111,478 and 240,372

Step by Step Solution

1. Step 1: Write the proportion equation
   111,478 : 240,372 = 240,372 : x
2. Step 2: Convert to fraction form
   111,478/240,372 = 240,372/x
3. Step 3: Cross multiply
   111,478x = 240,372 × 240,372
4. Step 4: Simplify right side
   111,478x = 57,778,698,384
5. Step 5: Solve for x
   x = 57,778,698,384/111,478
6. Step 6: Final answer
   x = 518,296.87