Finding the Third Proportional to 1,012,921 and 2,161,422

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012,921 : 2,161,422 = 2,161,422 : x
2. Step 2: Convert to fraction form
   1,012,921/2,161,422 = 2,161,422/x
3. Step 3: Cross multiply
   1,012,921x = 2,161,422 × 2,161,422
4. Step 4: Simplify right side
   1,012,921x = 4,671,745,062,084
5. Step 5: Solve for x
   x = 4,671,745,062,084/1,012,921
6. Step 6: Final answer
   x = 4,612,151.45