Finding the Third Proportional to 2,563,659 and 5,603,721

Step by Step Solution

1. Step 1: Write the proportion equation
   2,563,659 : 5,603,721 = 5,603,721 : x
2. Step 2: Convert to fraction form
   2,563,659/5,603,721 = 5,603,721/x
3. Step 3: Cross multiply
   2,563,659x = 5,603,721 × 5,603,721
4. Step 4: Simplify right side
   2,563,659x = 31,401,689,045,841
5. Step 5: Solve for x
   x = 31,401,689,045,841/2,563,659
6. Step 6: Final answer
   x = 12,248,777.64