Finding the Third Proportional to 864,662 and 1,381,311

Step by Step Solution

1. Step 1: Write the proportion equation
   864,662 : 1,381,311 = 1,381,311 : x
2. Step 2: Convert to fraction form
   864,662/1,381,311 = 1,381,311/x
3. Step 3: Cross multiply
   864,662x = 1,381,311 × 1,381,311
4. Step 4: Simplify right side
   864,662x = 1,908,020,078,721
5. Step 5: Solve for x
   x = 1,908,020,078,721/864,662
6. Step 6: Final answer
   x = 2,206,665.82