Finding the Third Proportional to 26.88 and 42.73

Step by Step Solution

1. Step 1: Write the proportion equation
   26.88 : 42.73 = 42.73 : x
2. Step 2: Convert to fraction form
   26.88/42.73 = 42.73/x
3. Step 3: Cross multiply
   26.88x = 42.73 × 42.73
4. Step 4: Simplify right side
   26.88x = 1,826.23
5. Step 5: Solve for x
   x = 1,826.23/26.88
6. Step 6: Final answer
   x = 67.95