Finding the Third Proportional to 3,268.69 and 3,555.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,268.69 : 3,555.56 = 3,555.56 : x
2. Step 2: Convert to fraction form
   3,268.69/3,555.56 = 3,555.56/x
3. Step 3: Cross multiply
   3,268.69x = 3,555.56 × 3,555.56
4. Step 4: Simplify right side
   3,268.69x = 12,642,024.69
5. Step 5: Solve for x
   x = 12,642,024.69/3,268.69
6. Step 6: Final answer
   x = 3,867.61