Finding the Third Proportional to 643,114 and 1,396,940

Step by Step Solution

1. Step 1: Write the proportion equation
   643,114 : 1,396,940 = 1,396,940 : x
2. Step 2: Convert to fraction form
   643,114/1,396,940 = 1,396,940/x
3. Step 3: Cross multiply
   643,114x = 1,396,940 × 1,396,940
4. Step 4: Simplify right side
   643,114x = 1,951,441,363,600
5. Step 5: Solve for x
   x = 1,951,441,363,600/643,114
6. Step 6: Final answer
   x = 3,034,363.06