Finding the Third Proportional to 1,012,442 and 2,138,722

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,442 : 2,138,722 = 2,138,722 : x
2. Step 2: Convert to fraction form
   1,012,442/2,138,722 = 2,138,722/x
3. Step 3: Cross multiply
   1,012,442x = 2,138,722 × 2,138,722
4. Step 4: Simplify right side
   1,012,442x = 4,574,131,793,284
5. Step 5: Solve for x
   x = 4,574,131,793,284/1,012,442
6. Step 6: Final answer
   x = 4,517,919.83