Finding the Third Proportional to 1,010,643 and 2,189,474

Step by Step Solution

1. Step 1: Write the proportion equation
   1,010,643 : 2,189,474 = 2,189,474 : x
2. Step 2: Convert to fraction form
   1,010,643/2,189,474 = 2,189,474/x
3. Step 3: Cross multiply
   1,010,643x = 2,189,474 × 2,189,474
4. Step 4: Simplify right side
   1,010,643x = 4,793,796,396,676
5. Step 5: Solve for x
   x = 4,793,796,396,676/1,010,643
6. Step 6: Final answer
   x = 4,743,313.31