Finding the Third Proportional to 79,389 and 105,831

Step by Step Solution

1. Step 1: Write the proportion equation
   79,389 : 105,831 = 105,831 : x
2. Step 2: Convert to fraction form
   79,389/105,831 = 105,831/x
3. Step 3: Cross multiply
   79,389x = 105,831 × 105,831
4. Step 4: Simplify right side
   79,389x = 11,200,200,561
5. Step 5: Solve for x
   x = 11,200,200,561/79,389
6. Step 6: Final answer
   x = 141,080.01