Finding the Third Proportional to 3,918.38 and 8,560.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,918.38 : 8,560.69 = 8,560.69 : x
2. Step 2: Convert to fraction form
   3,918.38/8,560.69 = 8,560.69/x
3. Step 3: Cross multiply
   3,918.38x = 8,560.69 × 8,560.69
4. Step 4: Simplify right side
   3,918.38x = 73,285,370.47
5. Step 5: Solve for x
   x = 73,285,370.47/3,918.38
6. Step 6: Final answer
   x = 18,703.00