Finding the Third Proportional to 4,853.81 and 10,399.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,853.81 : 10,399.31 = 10,399.31 : x
2. Step 2: Convert to fraction form
   4,853.81/10,399.31 = 10,399.31/x
3. Step 3: Cross multiply
   4,853.81x = 10,399.31 × 10,399.31
4. Step 4: Simplify right side
   4,853.81x = 108,145,700.47
5. Step 5: Solve for x
   x = 108,145,700.47/4,853.81
6. Step 6: Final answer
   x = 22,280.57