Finding the Third Proportional to 28.48 and 67.39

Step by Step Solution

1. Step 1: Write the proportion equation
   28.48 : 67.39 = 67.39 : x
2. Step 2: Convert to fraction form
   28.48/67.39 = 67.39/x
3. Step 3: Cross multiply
   28.48x = 67.39 × 67.39
4. Step 4: Simplify right side
   28.48x = 4,542.02
5. Step 5: Solve for x
   x = 4,542.02/28.48
6. Step 6: Final answer
   x = 159.50