Finding the Third Proportional to 1,999.69 and 3,108.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,999.69 : 3,108.38 = 3,108.38 : x
2. Step 2: Convert to fraction form
   1,999.69/3,108.38 = 3,108.38/x
3. Step 3: Cross multiply
   1,999.69x = 3,108.38 × 3,108.38
4. Step 4: Simplify right side
   1,999.69x = 9,661,995.14
5. Step 5: Solve for x
   x = 9,661,995.14/1,999.69
6. Step 6: Final answer
   x = 4,831.75