Finding the Third Proportional to 8,308.13 and 17,920.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,308.13 : 17,920.69 = 17,920.69 : x
2. Step 2: Convert to fraction form
   8,308.13/17,920.69 = 17,920.69/x
3. Step 3: Cross multiply
   8,308.13x = 17,920.69 × 17,920.69
4. Step 4: Simplify right side
   8,308.13x = 321,151,040.47
5. Step 5: Solve for x
   x = 321,151,040.47/8,308.13
6. Step 6: Final answer
   x = 38,655.06