Finding the Third Proportional to 8,684.25 and 13,455.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,684.25 : 13,455.38 = 13,455.38 : x
2. Step 2: Convert to fraction form
   8,684.25/13,455.38 = 13,455.38/x
3. Step 3: Cross multiply
   8,684.25x = 13,455.38 × 13,455.38
4. Step 4: Simplify right side
   8,684.25x = 181,047,116.39
5. Step 5: Solve for x
   x = 181,047,116.39/8,684.25
6. Step 6: Final answer
   x = 20,847.76