Finding the Third Proportional to 621,200 and 1,323,744

Step by Step Solution

1. Step 1: Write the proportion equation
   621,200 : 1,323,744 = 1,323,744 : x
2. Step 2: Convert to fraction form
   621,200/1,323,744 = 1,323,744/x
3. Step 3: Cross multiply
   621,200x = 1,323,744 × 1,323,744
4. Step 4: Simplify right side
   621,200x = 1,752,298,177,536
5. Step 5: Solve for x
   x = 1,752,298,177,536/621,200
6. Step 6: Final answer
   x = 2,820,827.72