Finding the Third Proportional to 43.59 and 65.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43.59 : 65.72 = 65.72 : x
2. Step 2: Convert to fraction form
   43.59/65.72 = 65.72/x
3. Step 3: Cross multiply
   43.59x = 65.72 × 65.72
4. Step 4: Simplify right side
   43.59x = 4,318.95
5. Step 5: Solve for x
   x = 4,318.95/43.59
6. Step 6: Final answer
   x = 99.07