Finding the Third Proportional to 121,124.25 and 282,915

Step by Step Solution

1. Step 1: Write the proportion equation
   121,124.25 : 282,915 = 282,915 : x
2. Step 2: Convert to fraction form
   121,124.25/282,915 = 282,915/x
3. Step 3: Cross multiply
   121,124.25x = 282,915 × 282,915
4. Step 4: Simplify right side
   121,124.25x = 80,040,897,225
5. Step 5: Solve for x
   x = 80,040,897,225/121,124.25
6. Step 6: Final answer
   x = 660,816.45