Finding the Third Proportional to 111,512 and 240,520

Step by Step Solution

1. Step 1: Write the proportion equation
   111,512 : 240,520 = 240,520 : x
2. Step 2: Convert to fraction form
   111,512/240,520 = 240,520/x
3. Step 3: Cross multiply
   111,512x = 240,520 × 240,520
4. Step 4: Simplify right side
   111,512x = 57,849,870,400
5. Step 5: Solve for x
   x = 57,849,870,400/111,512
6. Step 6: Final answer
   x = 518,777.09