Finding the Third Proportional to 9,898 and 13,455

Step by Step Solution

1. Step 1: Write the proportion equation
   9,898 : 13,455 = 13,455 : x
2. Step 2: Convert to fraction form
   9,898/13,455 = 13,455/x
3. Step 3: Cross multiply
   9,898x = 13,455 × 13,455
4. Step 4: Simplify right side
   9,898x = 181,037,025
5. Step 5: Solve for x
   x = 181,037,025/9,898
6. Step 6: Final answer
   x = 18,290.26