Finding the Third Proportional to 5,550.56 and 11,890.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,550.56 : 11,890.69 = 11,890.69 : x
2. Step 2: Convert to fraction form
   5,550.56/11,890.69 = 11,890.69/x
3. Step 3: Cross multiply
   5,550.56x = 11,890.69 × 11,890.69
4. Step 4: Simplify right side
   5,550.56x = 141,388,449.22
5. Step 5: Solve for x
   x = 141,388,449.22/5,550.56
6. Step 6: Final answer
   x = 25,472.81