Finding the Third Proportional to 339,463.50 and 706,818

Step by Step Solution

1. Step 1: Write the proportion equation
   339,463.50 : 706,818 = 706,818 : x
2. Step 2: Convert to fraction form
   339,463.50/706,818 = 706,818/x
3. Step 3: Cross multiply
   339,463.50x = 706,818 × 706,818
4. Step 4: Simplify right side
   339,463.50x = 499,591,685,124
5. Step 5: Solve for x
   x = 499,591,685,124/339,463.50
6. Step 6: Final answer
   x = 1,471,709.58