Finding the Third Proportional to 339,558 and 706,960.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,558 : 706,960.50 = 706,960.50 : x
2. Step 2: Convert to fraction form
   339,558/706,960.50 = 706,960.50/x
3. Step 3: Cross multiply
   339,558x = 706,960.50 × 706,960.50
4. Step 4: Simplify right side
   339,558x = 499,793,148,560.25
5. Step 5: Solve for x
   x = 499,793,148,560.25/339,558
6. Step 6: Final answer
   x = 1,471,893.31