Finding the Third Proportional to 685,371 and 1,485,144

Step by Step Solution

1. Step 1: Write the proportion equation
   685,371 : 1,485,144 = 1,485,144 : x
2. Step 2: Convert to fraction form
   685,371/1,485,144 = 1,485,144/x
3. Step 3: Cross multiply
   685,371x = 1,485,144 × 1,485,144
4. Step 4: Simplify right side
   685,371x = 2,205,652,700,736
5. Step 5: Solve for x
   x = 2,205,652,700,736/685,371
6. Step 6: Final answer
   x = 3,218,187.96