Finding the Third Proportional to 80,428.50 and 158,838

Step by Step Solution

1. Step 1: Write the proportion equation
   80,428.50 : 158,838 = 158,838 : x
2. Step 2: Convert to fraction form
   80,428.50/158,838 = 158,838/x
3. Step 3: Cross multiply
   80,428.50x = 158,838 × 158,838
4. Step 4: Simplify right side
   80,428.50x = 25,229,510,244
5. Step 5: Solve for x
   x = 25,229,510,244/80,428.50
6. Step 6: Final answer
   x = 313,688.68