Finding the Third Proportional to 3,403.69 and 8,321.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,403.69 : 8,321.06 = 8,321.06 : x
2. Step 2: Convert to fraction form
   3,403.69/8,321.06 = 8,321.06/x
3. Step 3: Cross multiply
   3,403.69x = 8,321.06 × 8,321.06
4. Step 4: Simplify right side
   3,403.69x = 69,240,081.13
5. Step 5: Solve for x
   x = 69,240,081.13/3,403.69
6. Step 6: Final answer
   x = 20,342.67