Finding the Third Proportional to 5,518.69 and 11,826.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,518.69 : 11,826.56 = 11,826.56 : x
2. Step 2: Convert to fraction form
   5,518.69/11,826.56 = 11,826.56/x
3. Step 3: Cross multiply
   5,518.69x = 11,826.56 × 11,826.56
4. Step 4: Simplify right side
   5,518.69x = 139,867,580.57
5. Step 5: Solve for x
   x = 139,867,580.57/5,518.69
6. Step 6: Final answer
   x = 25,344.36