Finding the Third Proportional to 1,621,005 and 2,542,788

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,005 : 2,542,788 = 2,542,788 : x
2. Step 2: Convert to fraction form
   1,621,005/2,542,788 = 2,542,788/x
3. Step 3: Cross multiply
   1,621,005x = 2,542,788 × 2,542,788
4. Step 4: Simplify right side
   1,621,005x = 6,465,770,812,944
5. Step 5: Solve for x
   x = 6,465,770,812,944/1,621,005
6. Step 6: Final answer
   x = 3,988,742.05