Finding the Third Proportional to 111,496.50 and 240,489

Step by Step Solution

1. Step 1: Write the proportion equation
   111,496.50 : 240,489 = 240,489 : x
2. Step 2: Convert to fraction form
   111,496.50/240,489 = 240,489/x
3. Step 3: Cross multiply
   111,496.50x = 240,489 × 240,489
4. Step 4: Simplify right side
   111,496.50x = 57,834,959,121
5. Step 5: Solve for x
   x = 57,834,959,121/111,496.50
6. Step 6: Final answer
   x = 518,715.47