Finding the Third Proportional to 1,389.23 and 1,804.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,389.23 : 1,804.57 = 1,804.57 : x
2. Step 2: Convert to fraction form
   1,389.23/1,804.57 = 1,804.57/x
3. Step 3: Cross multiply
   1,389.23x = 1,804.57 × 1,804.57
4. Step 4: Simplify right side
   1,389.23x = 3,256,474.01
5. Step 5: Solve for x
   x = 3,256,474.01/1,389.23
6. Step 6: Final answer
   x = 2,344.08