Finding the Third Proportional to 1,039.31 and 1,605.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.31 : 1,605.56 = 1,605.56 : x
2. Step 2: Convert to fraction form
   1,039.31/1,605.56 = 1,605.56/x
3. Step 3: Cross multiply
   1,039.31x = 1,605.56 × 1,605.56
4. Step 4: Simplify right side
   1,039.31x = 2,577,830.94
5. Step 5: Solve for x
   x = 2,577,830.94/1,039.31
6. Step 6: Final answer
   x = 2,480.32