Finding the Third Proportional to 5,368.78 and 8,269.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,368.78 : 8,269.59 = 8,269.59 : x
2. Step 2: Convert to fraction form
   5,368.78/8,269.59 = 8,269.59/x
3. Step 3: Cross multiply
   5,368.78x = 8,269.59 × 8,269.59
4. Step 4: Simplify right side
   5,368.78x = 68,386,180.79
5. Step 5: Solve for x
   x = 68,386,180.79/5,368.78
6. Step 6: Final answer
   x = 12,737.75