Finding the Third Proportional to 111,915 and 242,755

Step by Step Solution

1. Step 1: Write the proportion equation
   111,915 : 242,755 = 242,755 : x
2. Step 2: Convert to fraction form
   111,915/242,755 = 242,755/x
3. Step 3: Cross multiply
   111,915x = 242,755 × 242,755
4. Step 4: Simplify right side
   111,915x = 58,929,990,025
5. Step 5: Solve for x
   x = 58,929,990,025/111,915
6. Step 6: Final answer
   x = 526,560.25