Finding the Third Proportional to 16.69 and 43.13

Step by Step Solution

1. Step 1: Write the proportion equation
   16.69 : 43.13 = 43.13 : x
2. Step 2: Convert to fraction form
   16.69/43.13 = 43.13/x
3. Step 3: Cross multiply
   16.69x = 43.13 × 43.13
4. Step 4: Simplify right side
   16.69x = 1,859.77
5. Step 5: Solve for x
   x = 1,859.77/16.69
6. Step 6: Final answer
   x = 111.45