Finding the Third Proportional to 3,829.78 and 8,317.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,829.78 : 8,317.69 = 8,317.69 : x
2. Step 2: Convert to fraction form
   3,829.78/8,317.69 = 8,317.69/x
3. Step 3: Cross multiply
   3,829.78x = 8,317.69 × 8,317.69
4. Step 4: Simplify right side
   3,829.78x = 69,183,925.35
5. Step 5: Solve for x
   x = 69,183,925.35/3,829.78
6. Step 6: Final answer
   x = 18,064.72