Finding the Third Proportional to 8,128.69 and 9,298.13

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.69 : 9,298.13 = 9,298.13 : x
2. Step 2: Convert to fraction form
   8,128.69/9,298.13 = 9,298.13/x
3. Step 3: Cross multiply
   8,128.69x = 9,298.13 × 9,298.13
4. Step 4: Simplify right side
   8,128.69x = 86,455,128.52
5. Step 5: Solve for x
   x = 86,455,128.52/8,128.69
6. Step 6: Final answer
   x = 10,635.80