Finding the Third Proportional to 6,466,728 and 8,991,384

Step by Step Solution

1. Step 1: Write the proportion equation
   6,466,728 : 8,991,384 = 8,991,384 : x
2. Step 2: Convert to fraction form
   6,466,728/8,991,384 = 8,991,384/x
3. Step 3: Cross multiply
   6,466,728x = 8,991,384 × 8,991,384
4. Step 4: Simplify right side
   6,466,728x = 80,844,986,235,456
5. Step 5: Solve for x
   x = 80,844,986,235,456/6,466,728
6. Step 6: Final answer
   x = 12,501,683.42