Finding the Third Proportional to 3,642,491 and 5,345,638

Step by Step Solution

1. Step 1: Write the proportion equation
   3,642,491 : 5,345,638 = 5,345,638 : x
2. Step 2: Convert to fraction form
   3,642,491/5,345,638 = 5,345,638/x
3. Step 3: Cross multiply
   3,642,491x = 5,345,638 × 5,345,638
4. Step 4: Simplify right side
   3,642,491x = 28,575,845,627,044
5. Step 5: Solve for x
   x = 28,575,845,627,044/3,642,491
6. Step 6: Final answer
   x = 7,845,138.29