Finding the Third Proportional to 28.69 and 73.69

Step by Step Solution

1. Step 1: Write the proportion equation
   28.69 : 73.69 = 73.69 : x
2. Step 2: Convert to fraction form
   28.69/73.69 = 73.69/x
3. Step 3: Cross multiply
   28.69x = 73.69 × 73.69
4. Step 4: Simplify right side
   28.69x = 5,429.85
5. Step 5: Solve for x
   x = 5,429.85/28.69
6. Step 6: Final answer
   x = 189.28