Finding the Third Proportional to 8,488.13 and 11,404.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,488.13 : 11,404.69 = 11,404.69 : x
2. Step 2: Convert to fraction form
   8,488.13/11,404.69 = 11,404.69/x
3. Step 3: Cross multiply
   8,488.13x = 11,404.69 × 11,404.69
4. Step 4: Simplify right side
   8,488.13x = 130,066,896.97
5. Step 5: Solve for x
   x = 130,066,896.97/8,488.13
6. Step 6: Final answer
   x = 15,323.40