Finding the Third Proportional to 12,860 and 26,077.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,860 : 26,077.50 = 26,077.50 : x
2. Step 2: Convert to fraction form
   12,860/26,077.50 = 26,077.50/x
3. Step 3: Cross multiply
   12,860x = 26,077.50 × 26,077.50
4. Step 4: Simplify right side
   12,860x = 680,036,006.25
5. Step 5: Solve for x
   x = 680,036,006.25/12,860
6. Step 6: Final answer
   x = 52,879.94