Finding the Third Proportional to 12,989.25 and 28,255.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,989.25 : 28,255.50 = 28,255.50 : x
2. Step 2: Convert to fraction form
   12,989.25/28,255.50 = 28,255.50/x
3. Step 3: Cross multiply
   12,989.25x = 28,255.50 × 28,255.50
4. Step 4: Simplify right side
   12,989.25x = 798,373,280.25
5. Step 5: Solve for x
   x = 798,373,280.25/12,989.25
6. Step 6: Final answer
   x = 61,464.16