Finding the Third Proportional to 1,645,218 and 2,542,508

Step by Step Solution

1. Step 1: Write the proportion equation
   1,645,218 : 2,542,508 = 2,542,508 : x
2. Step 2: Convert to fraction form
   1,645,218/2,542,508 = 2,542,508/x
3. Step 3: Cross multiply
   1,645,218x = 2,542,508 × 2,542,508
4. Step 4: Simplify right side
   1,645,218x = 6,464,346,930,064
5. Step 5: Solve for x
   x = 6,464,346,930,064/1,645,218
6. Step 6: Final answer
   x = 3,929,173.48