Finding the Third Proportional to 978,675 and 2,149,806

Step by Step Solution

1. Step 1: Write the proportion equation
   978,675 : 2,149,806 = 2,149,806 : x
2. Step 2: Convert to fraction form
   978,675/2,149,806 = 2,149,806/x
3. Step 3: Cross multiply
   978,675x = 2,149,806 × 2,149,806
4. Step 4: Simplify right side
   978,675x = 4,621,665,837,636
5. Step 5: Solve for x
   x = 4,621,665,837,636/978,675
6. Step 6: Final answer
   x = 4,722,370.39