Finding the Third Proportional to 621,802 and 1,338,736

Step by Step Solution

1. Step 1: Write the proportion equation
   621,802 : 1,338,736 = 1,338,736 : x
2. Step 2: Convert to fraction form
   621,802/1,338,736 = 1,338,736/x
3. Step 3: Cross multiply
   621,802x = 1,338,736 × 1,338,736
4. Step 4: Simplify right side
   621,802x = 1,792,214,077,696
5. Step 5: Solve for x
   x = 1,792,214,077,696/621,802
6. Step 6: Final answer
   x = 2,882,290.63