Finding the Third Proportional to 9,555 and 10,455

Step by Step Solution

1. Step 1: Write the proportion equation
   9,555 : 10,455 = 10,455 : x
2. Step 2: Convert to fraction form
   9,555/10,455 = 10,455/x
3. Step 3: Cross multiply
   9,555x = 10,455 × 10,455
4. Step 4: Simplify right side
   9,555x = 109,307,025
5. Step 5: Solve for x
   x = 109,307,025/9,555
6. Step 6: Final answer
   x = 11,439.77