Finding the Third Proportional to 12,691.69 and 26,826.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,691.69 : 26,826.19 = 26,826.19 : x
2. Step 2: Convert to fraction form
   12,691.69/26,826.19 = 26,826.19/x
3. Step 3: Cross multiply
   12,691.69x = 26,826.19 × 26,826.19
4. Step 4: Simplify right side
   12,691.69x = 719,644,335.79
5. Step 5: Solve for x
   x = 719,644,335.79/12,691.69
6. Step 6: Final answer
   x = 56,702.02