Finding the Third Proportional to 1,389.31 and 3,028.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389.31 : 3,028.25 = 3,028.25 : x
2. Step 2: Convert to fraction form
   1,389.31/3,028.25 = 3,028.25/x
3. Step 3: Cross multiply
   1,389.31x = 3,028.25 × 3,028.25
4. Step 4: Simplify right side
   1,389.31x = 9,170,298.06
5. Step 5: Solve for x
   x = 9,170,298.06/1,389.31
6. Step 6: Final answer
   x = 6,600.60