Finding the Third Proportional to 5,960.25 and 12,978.75

Step by Step Solution

1. Step 1: Write the proportion equation
   5,960.25 : 12,978.75 = 12,978.75 : x
2. Step 2: Convert to fraction form
   5,960.25/12,978.75 = 12,978.75/x
3. Step 3: Cross multiply
   5,960.25x = 12,978.75 × 12,978.75
4. Step 4: Simplify right side
   5,960.25x = 168,447,951.56
5. Step 5: Solve for x
   x = 168,447,951.56/5,960.25
6. Step 6: Final answer
   x = 28,261.89