Finding the Third Proportional to 3,918.38 and 8,107.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,918.38 : 8,107.59 = 8,107.59 : x
2. Step 2: Convert to fraction form
   3,918.38/8,107.59 = 8,107.59/x
3. Step 3: Cross multiply
   3,918.38x = 8,107.59 × 8,107.59
4. Step 4: Simplify right side
   3,918.38x = 65,733,076.42
5. Step 5: Solve for x
   x = 65,733,076.42/3,918.38
6. Step 6: Final answer
   x = 16,775.60