Finding the Third Proportional to 111,510 and 240,528

Step by Step Solution

1. Step 1: Write the proportion equation
   111,510 : 240,528 = 240,528 : x
2. Step 2: Convert to fraction form
   111,510/240,528 = 240,528/x
3. Step 3: Cross multiply
   111,510x = 240,528 × 240,528
4. Step 4: Simplify right side
   111,510x = 57,853,718,784
5. Step 5: Solve for x
   x = 57,853,718,784/111,510
6. Step 6: Final answer
   x = 518,820.90