Finding the Third Proportional to 111,708 and 240,912

Step by Step Solution

1. Step 1: Write the proportion equation
   111,708 : 240,912 = 240,912 : x
2. Step 2: Convert to fraction form
   111,708/240,912 = 240,912/x
3. Step 3: Cross multiply
   111,708x = 240,912 × 240,912
4. Step 4: Simplify right side
   111,708x = 58,038,591,744
5. Step 5: Solve for x
   x = 58,038,591,744/111,708
6. Step 6: Final answer
   x = 519,556.27