Finding the Third Proportional to 188,504.50 and 398,825

Step by Step Solution

1. Step 1: Write the proportion equation
   188,504.50 : 398,825 = 398,825 : x
2. Step 2: Convert to fraction form
   188,504.50/398,825 = 398,825/x
3. Step 3: Cross multiply
   188,504.50x = 398,825 × 398,825
4. Step 4: Simplify right side
   188,504.50x = 159,061,380,625
5. Step 5: Solve for x
   x = 159,061,380,625/188,504.50
6. Step 6: Final answer
   x = 843,806.81