Finding the Third Proportional to 3,836.11 and 8,404.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,836.11 : 8,404.17 = 8,404.17 : x
2. Step 2: Convert to fraction form
   3,836.11/8,404.17 = 8,404.17/x
3. Step 3: Cross multiply
   3,836.11x = 8,404.17 × 8,404.17
4. Step 4: Simplify right side
   3,836.11x = 70,630,104.90
5. Step 5: Solve for x
   x = 70,630,104.90/3,836.11
6. Step 6: Final answer
   x = 18,411.91