Finding the Third Proportional to 4,082,978 and 8,913,037

Step by Step Solution

1. Step 1: Write the proportion equation
   4,082,978 : 8,913,037 = 8,913,037 : x
2. Step 2: Convert to fraction form
   4,082,978/8,913,037 = 8,913,037/x
3. Step 3: Cross multiply
   4,082,978x = 8,913,037 × 8,913,037
4. Step 4: Simplify right side
   4,082,978x = 79,442,228,563,369
5. Step 5: Solve for x
   x = 79,442,228,563,369/4,082,978
6. Step 6: Final answer
   x = 19,456,932.80