Finding the Third Proportional to 12,800 and 28,060.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,800 : 28,060.25 = 28,060.25 : x
2. Step 2: Convert to fraction form
   12,800/28,060.25 = 28,060.25/x
3. Step 3: Cross multiply
   12,800x = 28,060.25 × 28,060.25
4. Step 4: Simplify right side
   12,800x = 787,377,630.06
5. Step 5: Solve for x
   x = 787,377,630.06/12,800
6. Step 6: Final answer
   x = 61,513.88