Finding the Third Proportional to 339,788 and 475,250

Step by Step Solution

1. Step 1: Write the proportion equation
   339,788 : 475,250 = 475,250 : x
2. Step 2: Convert to fraction form
   339,788/475,250 = 475,250/x
3. Step 3: Cross multiply
   339,788x = 475,250 × 475,250
4. Step 4: Simplify right side
   339,788x = 225,862,562,500
5. Step 5: Solve for x
   x = 225,862,562,500/339,788
6. Step 6: Final answer
   x = 664,716.12