Finding the Third Proportional to 3,857.81 and 8,316.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,857.81 : 8,316.38 = 8,316.38 : x
2. Step 2: Convert to fraction form
   3,857.81/8,316.38 = 8,316.38/x
3. Step 3: Cross multiply
   3,857.81x = 8,316.38 × 8,316.38
4. Step 4: Simplify right side
   3,857.81x = 69,162,093.14
5. Step 5: Solve for x
   x = 69,162,093.14/3,857.81
6. Step 6: Final answer
   x = 17,927.80