Finding the Third Proportional to 8,570 and 13,098

Step by Step Solution

1. Step 1: Write the proportion equation
   8,570 : 13,098 = 13,098 : x
2. Step 2: Convert to fraction form
   8,570/13,098 = 13,098/x
3. Step 3: Cross multiply
   8,570x = 13,098 × 13,098
4. Step 4: Simplify right side
   8,570x = 171,557,604
5. Step 5: Solve for x
   x = 171,557,604/8,570
6. Step 6: Final answer
   x = 20,018.39