Finding the Third Proportional to 3,945.38 and 8,668.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945.38 : 8,668.69 = 8,668.69 : x
2. Step 2: Convert to fraction form
   3,945.38/8,668.69 = 8,668.69/x
3. Step 3: Cross multiply
   3,945.38x = 8,668.69 × 8,668.69
4. Step 4: Simplify right side
   3,945.38x = 75,146,142.97
5. Step 5: Solve for x
   x = 75,146,142.97/3,945.38
6. Step 6: Final answer
   x = 19,046.64