Finding the Third Proportional to 1,519.81 and 2,173.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,519.81 : 2,173.31 = 2,173.31 : x
2. Step 2: Convert to fraction form
   1,519.81/2,173.31 = 2,173.31/x
3. Step 3: Cross multiply
   1,519.81x = 2,173.31 × 2,173.31
4. Step 4: Simplify right side
   1,519.81x = 4,723,287.22
5. Step 5: Solve for x
   x = 4,723,287.22/1,519.81
6. Step 6: Final answer
   x = 3,107.81