Finding the Third Proportional to 3,664,678 and 7,979,948

Step by Step Solution

1. Step 1: Write the proportion equation
   3,664,678 : 7,979,948 = 7,979,948 : x
2. Step 2: Convert to fraction form
   3,664,678/7,979,948 = 7,979,948/x
3. Step 3: Cross multiply
   3,664,678x = 7,979,948 × 7,979,948
4. Step 4: Simplify right side
   3,664,678x = 63,679,570,082,704
5. Step 5: Solve for x
   x = 63,679,570,082,704/3,664,678
6. Step 6: Final answer
   x = 17,376,579.90