Finding the Third Proportional to 3,843.39 and 8,405.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,843.39 : 8,405.33 = 8,405.33 : x
2. Step 2: Convert to fraction form
   3,843.39/8,405.33 = 8,405.33/x
3. Step 3: Cross multiply
   3,843.39x = 8,405.33 × 8,405.33
4. Step 4: Simplify right side
   3,843.39x = 70,649,606.56
5. Step 5: Solve for x
   x = 70,649,606.56/3,843.39
6. Step 6: Final answer
   x = 18,382.12