Finding the Third Proportional to 80,446 and 105,786.50

Step by Step Solution

1. Step 1: Write the proportion equation
   80,446 : 105,786.50 = 105,786.50 : x
2. Step 2: Convert to fraction form
   80,446/105,786.50 = 105,786.50/x
3. Step 3: Cross multiply
   80,446x = 105,786.50 × 105,786.50
4. Step 4: Simplify right side
   80,446x = 11,190,783,582.25
5. Step 5: Solve for x
   x = 11,190,783,582.25/80,446
6. Step 6: Final answer
   x = 139,109.26