Finding the Third Proportional to 1,851.75 and 3,990.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.75 : 3,990.38 = 3,990.38 : x
2. Step 2: Convert to fraction form
   1,851.75/3,990.38 = 3,990.38/x
3. Step 3: Cross multiply
   1,851.75x = 3,990.38 × 3,990.38
4. Step 4: Simplify right side
   1,851.75x = 15,923,092.64
5. Step 5: Solve for x
   x = 15,923,092.64/1,851.75
6. Step 6: Final answer
   x = 8,598.94