Finding the Third Proportional to 339,273.98 and 516,870.70

Step by Step Solution

1. Step 1: Write the proportion equation
   339,273.98 : 516,870.70 = 516,870.70 : x
2. Step 2: Convert to fraction form
   339,273.98/516,870.70 = 516,870.70/x
3. Step 3: Cross multiply
   339,273.98x = 516,870.70 × 516,870.70
4. Step 4: Simplify right side
   339,273.98x = 267,155,323,748.93
5. Step 5: Solve for x
   x = 267,155,323,748.93/339,273.98
6. Step 6: Final answer
   x = 787,432.39