Finding the Third Proportional to 339,530 and 706,951.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,530 : 706,951.50 = 706,951.50 : x
2. Step 2: Convert to fraction form
   339,530/706,951.50 = 706,951.50/x
3. Step 3: Cross multiply
   339,530x = 706,951.50 × 706,951.50
4. Step 4: Simplify right side
   339,530x = 499,780,423,352.25
5. Step 5: Solve for x
   x = 499,780,423,352.25/339,530
6. Step 6: Final answer
   x = 1,471,977.21