Finding the Third Proportional to 121,472.50 and 250,724

Step by Step Solution

1. Step 1: Write the proportion equation
   121,472.50 : 250,724 = 250,724 : x
2. Step 2: Convert to fraction form
   121,472.50/250,724 = 250,724/x
3. Step 3: Cross multiply
   121,472.50x = 250,724 × 250,724
4. Step 4: Simplify right side
   121,472.50x = 62,862,524,176
5. Step 5: Solve for x
   x = 62,862,524,176/121,472.50
6. Step 6: Final answer
   x = 517,504.16