Finding the Third Proportional to 111,918 and 240,401

Step by Step Solution

1. Step 1: Write the proportion equation
   111,918 : 240,401 = 240,401 : x
2. Step 2: Convert to fraction form
   111,918/240,401 = 240,401/x
3. Step 3: Cross multiply
   111,918x = 240,401 × 240,401
4. Step 4: Simplify right side
   111,918x = 57,792,640,801
5. Step 5: Solve for x
   x = 57,792,640,801/111,918
6. Step 6: Final answer
   x = 516,383.79