Finding the Third Proportional to 28.69 and 38.92

Step by Step Solution

1. Step 1: Write the proportion equation
   28.69 : 38.92 = 38.92 : x
2. Step 2: Convert to fraction form
   28.69/38.92 = 38.92/x
3. Step 3: Cross multiply
   28.69x = 38.92 × 38.92
4. Step 4: Simplify right side
   28.69x = 1,514.61
5. Step 5: Solve for x
   x = 1,514.61/28.69
6. Step 6: Final answer
   x = 52.80