Finding the Third Proportional to 1,679.91 and 1,987.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,679.91 : 1,987.03 = 1,987.03 : x
2. Step 2: Convert to fraction form
   1,679.91/1,987.03 = 1,987.03/x
3. Step 3: Cross multiply
   1,679.91x = 1,987.03 × 1,987.03
4. Step 4: Simplify right side
   1,679.91x = 3,948,293.19
5. Step 5: Solve for x
   x = 3,948,293.19/1,679.91
6. Step 6: Final answer
   x = 2,350.31