Finding the Third Proportional to 3,555,690 and 5,648,463

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555,690 : 5,648,463 = 5,648,463 : x
2. Step 2: Convert to fraction form
   3,555,690/5,648,463 = 5,648,463/x
3. Step 3: Cross multiply
   3,555,690x = 5,648,463 × 5,648,463
4. Step 4: Simplify right side
   3,555,690x = 31,905,134,262,369
5. Step 5: Solve for x
   x = 31,905,134,262,369/3,555,690
6. Step 6: Final answer
   x = 8,972,979.72