Finding the Third Proportional to 5,559.05 and 12,211.59

Step by Step Solution

1. Step 1: Write the proportion equation
   5,559.05 : 12,211.59 = 12,211.59 : x
2. Step 2: Convert to fraction form
   5,559.05/12,211.59 = 12,211.59/x
3. Step 3: Cross multiply
   5,559.05x = 12,211.59 × 12,211.59
4. Step 4: Simplify right side
   5,559.05x = 149,123,021.92
5. Step 5: Solve for x
   x = 149,123,021.92/5,559.05
6. Step 6: Final answer
   x = 26,825.29