Finding the Third Proportional to 643,104 and 1,396,884

Step by Step Solution

1. Step 1: Write the proportion equation
   643,104 : 1,396,884 = 1,396,884 : x
2. Step 2: Convert to fraction form
   643,104/1,396,884 = 1,396,884/x
3. Step 3: Cross multiply
   643,104x = 1,396,884 × 1,396,884
4. Step 4: Simplify right side
   643,104x = 1,951,284,909,456
5. Step 5: Solve for x
   x = 1,951,284,909,456/643,104
6. Step 6: Final answer
   x = 3,034,166.96