Finding the Third Proportional to 195,631.50 and 428,766

Step by Step Solution

1. Step 1: Write the proportion equation
   195,631.50 : 428,766 = 428,766 : x
2. Step 2: Convert to fraction form
   195,631.50/428,766 = 428,766/x
3. Step 3: Cross multiply
   195,631.50x = 428,766 × 428,766
4. Step 4: Simplify right side
   195,631.50x = 183,840,282,756
5. Step 5: Solve for x
   x = 183,840,282,756/195,631.50
6. Step 6: Final answer
   x = 939,727.41