Finding the Third Proportional to 1,011,629 and 2,116,780

Step by Step Solution

1. Step 1: Write the proportion equation
   1,011,629 : 2,116,780 = 2,116,780 : x
2. Step 2: Convert to fraction form
   1,011,629/2,116,780 = 2,116,780/x
3. Step 3: Cross multiply
   1,011,629x = 2,116,780 × 2,116,780
4. Step 4: Simplify right side
   1,011,629x = 4,480,757,568,400
5. Step 5: Solve for x
   x = 4,480,757,568,400/1,011,629
6. Step 6: Final answer
   x = 4,429,249.82