Finding the Third Proportional to 111,508 and 240,512

Step by Step Solution

1. Step 1: Write the proportion equation
   111,508 : 240,512 = 240,512 : x
2. Step 2: Convert to fraction form
   111,508/240,512 = 240,512/x
3. Step 3: Cross multiply
   111,508x = 240,512 × 240,512
4. Step 4: Simplify right side
   111,508x = 57,846,022,144
5. Step 5: Solve for x
   x = 57,846,022,144/111,508
6. Step 6: Final answer
   x = 518,761.18