Finding the Third Proportional to 359,923 and 787,644

Step by Step Solution

1. Step 1: Write the proportion equation
   359,923 : 787,644 = 787,644 : x
2. Step 2: Convert to fraction form
   359,923/787,644 = 787,644/x
3. Step 3: Cross multiply
   359,923x = 787,644 × 787,644
4. Step 4: Simplify right side
   359,923x = 620,383,070,736
5. Step 5: Solve for x
   x = 620,383,070,736/359,923
6. Step 6: Final answer
   x = 1,723,654.98