Finding the Third Proportional to 9,255 and 13,089

Step by Step Solution

1. Step 1: Write the proportion equation
   9,255 : 13,089 = 13,089 : x
2. Step 2: Convert to fraction form
   9,255/13,089 = 13,089/x
3. Step 3: Cross multiply
   9,255x = 13,089 × 13,089
4. Step 4: Simplify right side
   9,255x = 171,321,921
5. Step 5: Solve for x
   x = 171,321,921/9,255
6. Step 6: Final answer
   x = 18,511.28