Finding the Third Proportional to 621,812 and 1,328,944

Step by Step Solution

1. Step 1: Write the proportion equation
   621,812 : 1,328,944 = 1,328,944 : x
2. Step 2: Convert to fraction form
   621,812/1,328,944 = 1,328,944/x
3. Step 3: Cross multiply
   621,812x = 1,328,944 × 1,328,944
4. Step 4: Simplify right side
   621,812x = 1,766,092,155,136
5. Step 5: Solve for x
   x = 1,766,092,155,136/621,812
6. Step 6: Final answer
   x = 2,840,234.92