Finding the Third Proportional to 10,089 and 13,485

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089 : 13,485 = 13,485 : x
2. Step 2: Convert to fraction form
   10,089/13,485 = 13,485/x
3. Step 3: Cross multiply
   10,089x = 13,485 × 13,485
4. Step 4: Simplify right side
   10,089x = 181,845,225
5. Step 5: Solve for x
   x = 181,845,225/10,089
6. Step 6: Final answer
   x = 18,024.11