Finding the Third Proportional to 9,129 and 10,089

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129 : 10,089 = 10,089 : x
2. Step 2: Convert to fraction form
   9,129/10,089 = 10,089/x
3. Step 3: Cross multiply
   9,129x = 10,089 × 10,089
4. Step 4: Simplify right side
   9,129x = 101,787,921
5. Step 5: Solve for x
   x = 101,787,921/9,129
6. Step 6: Final answer
   x = 11,149.95