Finding the Third Proportional to 111,552 and 239,280

Step by Step Solution

1. Step 1: Write the proportion equation
   111,552 : 239,280 = 239,280 : x
2. Step 2: Convert to fraction form
   111,552/239,280 = 239,280/x
3. Step 3: Cross multiply
   111,552x = 239,280 × 239,280
4. Step 4: Simplify right side
   111,552x = 57,254,918,400
5. Step 5: Solve for x
   x = 57,254,918,400/111,552
6. Step 6: Final answer
   x = 513,257.66