Finding the Third Proportional to 158,149.50 and 334,638

Step by Step Solution

1. Step 1: Write the proportion equation
   158,149.50 : 334,638 = 334,638 : x
2. Step 2: Convert to fraction form
   158,149.50/334,638 = 334,638/x
3. Step 3: Cross multiply
   158,149.50x = 334,638 × 334,638
4. Step 4: Simplify right side
   158,149.50x = 111,982,591,044
5. Step 5: Solve for x
   x = 111,982,591,044/158,149.50
6. Step 6: Final answer
   x = 708,080.59