Finding the Third Proportional to 819,616 and 1,679,696

Step by Step Solution

1. Step 1: Write the proportion equation
   819,616 : 1,679,696 = 1,679,696 : x
2. Step 2: Convert to fraction form
   819,616/1,679,696 = 1,679,696/x
3. Step 3: Cross multiply
   819,616x = 1,679,696 × 1,679,696
4. Step 4: Simplify right side
   819,616x = 2,821,378,652,416
5. Step 5: Solve for x
   x = 2,821,378,652,416/819,616
6. Step 6: Final answer
   x = 3,442,317.69