Finding the Third Proportional to 622,934 and 1,340,640

Step by Step Solution

1. Step 1: Write the proportion equation
   622,934 : 1,340,640 = 1,340,640 : x
2. Step 2: Convert to fraction form
   622,934/1,340,640 = 1,340,640/x
3. Step 3: Cross multiply
   622,934x = 1,340,640 × 1,340,640
4. Step 4: Simplify right side
   622,934x = 1,797,315,609,600
5. Step 5: Solve for x
   x = 1,797,315,609,600/622,934
6. Step 6: Final answer
   x = 2,885,242.43