Finding the Third Proportional to 79,874 and 105,987

Step by Step Solution

1. Step 1: Write the proportion equation
   79,874 : 105,987 = 105,987 : x
2. Step 2: Convert to fraction form
   79,874/105,987 = 105,987/x
3. Step 3: Cross multiply
   79,874x = 105,987 × 105,987
4. Step 4: Simplify right side
   79,874x = 11,233,244,169
5. Step 5: Solve for x
   x = 11,233,244,169/79,874
6. Step 6: Final answer
   x = 140,637.06