Finding the Third Proportional to 8,665 and 13,245

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665 : 13,245 = 13,245 : x
2. Step 2: Convert to fraction form
   8,665/13,245 = 13,245/x
3. Step 3: Cross multiply
   8,665x = 13,245 × 13,245
4. Step 4: Simplify right side
   8,665x = 175,430,025
5. Step 5: Solve for x
   x = 175,430,025/8,665
6. Step 6: Final answer
   x = 20,245.82