Finding the Third Proportional to 28.90 and 43.24

Step by Step Solution

1. Step 1: Write the proportion equation
   28.90 : 43.24 = 43.24 : x
2. Step 2: Convert to fraction form
   28.90/43.24 = 43.24/x
3. Step 3: Cross multiply
   28.90x = 43.24 × 43.24
4. Step 4: Simplify right side
   28.90x = 1,869.89
5. Step 5: Solve for x
   x = 1,869.89/28.90
6. Step 6: Final answer
   x = 64.71