Finding the Third Proportional to 43.25 and 72.88

Step by Step Solution

1. Step 1: Write the proportion equation
   43.25 : 72.88 = 72.88 : x
2. Step 2: Convert to fraction form
   43.25/72.88 = 72.88/x
3. Step 3: Cross multiply
   43.25x = 72.88 × 72.88
4. Step 4: Simplify right side
   43.25x = 5,310.77
5. Step 5: Solve for x
   x = 5,310.77/43.25
6. Step 6: Final answer
   x = 122.79