Finding the Third Proportional to 685,356 and 1,485,122

Step by Step Solution

1. Step 1: Write the proportion equation
   685,356 : 1,485,122 = 1,485,122 : x
2. Step 2: Convert to fraction form
   685,356/1,485,122 = 1,485,122/x
3. Step 3: Cross multiply
   685,356x = 1,485,122 × 1,485,122
4. Step 4: Simplify right side
   685,356x = 2,205,587,354,884
5. Step 5: Solve for x
   x = 2,205,587,354,884/685,356
6. Step 6: Final answer
   x = 3,218,163.05