Finding the Third Proportional to 616,690 and 1,485,676

Step by Step Solution

1. Step 1: Write the proportion equation
   616,690 : 1,485,676 = 1,485,676 : x
2. Step 2: Convert to fraction form
   616,690/1,485,676 = 1,485,676/x
3. Step 3: Cross multiply
   616,690x = 1,485,676 × 1,485,676
4. Step 4: Simplify right side
   616,690x = 2,207,233,176,976
5. Step 5: Solve for x
   x = 2,207,233,176,976/616,690
6. Step 6: Final answer
   x = 3,579,161.62