Finding the Third Proportional to 396,106 and 855,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   396,106 : 855,338.50 = 855,338.50 : x
2. Step 2: Convert to fraction form
   396,106/855,338.50 = 855,338.50/x
3. Step 3: Cross multiply
   396,106x = 855,338.50 × 855,338.50
4. Step 4: Simplify right side
   396,106x = 731,603,949,582.25
5. Step 5: Solve for x
   x = 731,603,949,582.25/396,106
6. Step 6: Final answer
   x = 1,846,990.32