Finding the Third Proportional to 479,172 and 718,771.50

Step by Step Solution

1. Step 1: Write the proportion equation
   479,172 : 718,771.50 = 718,771.50 : x
2. Step 2: Convert to fraction form
   479,172/718,771.50 = 718,771.50/x
3. Step 3: Cross multiply
   479,172x = 718,771.50 × 718,771.50
4. Step 4: Simplify right side
   479,172x = 516,632,469,212.25
5. Step 5: Solve for x
   x = 516,632,469,212.25/479,172
6. Step 6: Final answer
   x = 1,078,177.50