Finding the Third Proportional to 5,320.69 and 12,496.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,320.69 : 12,496.78 = 12,496.78 : x
2. Step 2: Convert to fraction form
   5,320.69/12,496.78 = 12,496.78/x
3. Step 3: Cross multiply
   5,320.69x = 12,496.78 × 12,496.78
4. Step 4: Simplify right side
   5,320.69x = 156,169,541.61
5. Step 5: Solve for x
   x = 156,169,541.61/5,320.69
6. Step 6: Final answer
   x = 29,351.38