Finding the Third Proportional to 111,270 and 247,418

Step by Step Solution

1. Step 1: Write the proportion equation
   111,270 : 247,418 = 247,418 : x
2. Step 2: Convert to fraction form
   111,270/247,418 = 247,418/x
3. Step 3: Cross multiply
   111,270x = 247,418 × 247,418
4. Step 4: Simplify right side
   111,270x = 61,215,666,724
5. Step 5: Solve for x
   x = 61,215,666,724/111,270
6. Step 6: Final answer
   x = 550,154.28