Finding the Third Proportional to 1,039.50 and 1,809

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.50 : 1,809 = 1,809 : x
2. Step 2: Convert to fraction form
   1,039.50/1,809 = 1,809/x
3. Step 3: Cross multiply
   1,039.50x = 1,809 × 1,809
4. Step 4: Simplify right side
   1,039.50x = 3,272,481
5. Step 5: Solve for x
   x = 3,272,481/1,039.50
6. Step 6: Final answer
   x = 3,148.13