Finding the Third Proportional to 3,645,408 and 7,977,384

Step by Step Solution

1. Step 1: Write the proportion equation
   3,645,408 : 7,977,384 = 7,977,384 : x
2. Step 2: Convert to fraction form
   3,645,408/7,977,384 = 7,977,384/x
3. Step 3: Cross multiply
   3,645,408x = 7,977,384 × 7,977,384
4. Step 4: Simplify right side
   3,645,408x = 63,638,655,483,456
5. Step 5: Solve for x
   x = 63,638,655,483,456/3,645,408
6. Step 6: Final answer
   x = 17,457,210.68