Finding the Third Proportional to 1,111.50 and 2,439

Step by Step Solution

1. Step 1: Write the proportion equation
   1,111.50 : 2,439 = 2,439 : x
2. Step 2: Convert to fraction form
   1,111.50/2,439 = 2,439/x
3. Step 3: Cross multiply
   1,111.50x = 2,439 × 2,439
4. Step 4: Simplify right side
   1,111.50x = 5,948,721
5. Step 5: Solve for x
   x = 5,948,721/1,111.50
6. Step 6: Final answer
   x = 5,351.98