Finding the Third Proportional to 158,447.50 and 330,000

Step by Step Solution

1. Step 1: Write the proportion equation
   158,447.50 : 330,000 = 330,000 : x
2. Step 2: Convert to fraction form
   158,447.50/330,000 = 330,000/x
3. Step 3: Cross multiply
   158,447.50x = 330,000 × 330,000
4. Step 4: Simplify right side
   158,447.50x = 108,900,000,000
5. Step 5: Solve for x
   x = 108,900,000,000/158,447.50
6. Step 6: Final answer
   x = 687,293.90