Finding the Third Proportional to 3,669,467 and 8,290,254

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669,467 : 8,290,254 = 8,290,254 : x
2. Step 2: Convert to fraction form
   3,669,467/8,290,254 = 8,290,254/x
3. Step 3: Cross multiply
   3,669,467x = 8,290,254 × 8,290,254
4. Step 4: Simplify right side
   3,669,467x = 68,728,311,384,516
5. Step 5: Solve for x
   x = 68,728,311,384,516/3,669,467
6. Step 6: Final answer
   x = 18,729,780.48