Finding the Third Proportional to 1,804.31 and 3,939.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,804.31 : 3,939.38 = 3,939.38 : x
2. Step 2: Convert to fraction form
   1,804.31/3,939.38 = 3,939.38/x
3. Step 3: Cross multiply
   1,804.31x = 3,939.38 × 3,939.38
4. Step 4: Simplify right side
   1,804.31x = 15,518,675.39
5. Step 5: Solve for x
   x = 15,518,675.39/1,804.31
6. Step 6: Final answer
   x = 8,600.88