Finding the Third Proportional to 80,432 and 105,768

Step by Step Solution

1. Step 1: Write the proportion equation
   80,432 : 105,768 = 105,768 : x
2. Step 2: Convert to fraction form
   80,432/105,768 = 105,768/x
3. Step 3: Cross multiply
   80,432x = 105,768 × 105,768
4. Step 4: Simplify right side
   80,432x = 11,186,869,824
5. Step 5: Solve for x
   x = 11,186,869,824/80,432
6. Step 6: Final answer
   x = 139,084.81