Finding the Third Proportional to 111,418 and 238,387

Step by Step Solution

1. Step 1: Write the proportion equation
   111,418 : 238,387 = 238,387 : x
2. Step 2: Convert to fraction form
   111,418/238,387 = 238,387/x
3. Step 3: Cross multiply
   111,418x = 238,387 × 238,387
4. Step 4: Simplify right side
   111,418x = 56,828,361,769
5. Step 5: Solve for x
   x = 56,828,361,769/111,418
6. Step 6: Final answer
   x = 510,046.51