Finding the Third Proportional to 643,092 and 1,396,860

Step by Step Solution

1. Step 1: Write the proportion equation
   643,092 : 1,396,860 = 1,396,860 : x
2. Step 2: Convert to fraction form
   643,092/1,396,860 = 1,396,860/x
3. Step 3: Cross multiply
   643,092x = 1,396,860 × 1,396,860
4. Step 4: Simplify right side
   643,092x = 1,951,217,859,600
5. Step 5: Solve for x
   x = 1,951,217,859,600/643,092
6. Step 6: Final answer
   x = 3,034,119.32