Finding the Third Proportional to 4,129,764 and 8,857,228

Step by Step Solution

1. Step 1: Write the proportion equation
   4,129,764 : 8,857,228 = 8,857,228 : x
2. Step 2: Convert to fraction form
   4,129,764/8,857,228 = 8,857,228/x
3. Step 3: Cross multiply
   4,129,764x = 8,857,228 × 8,857,228
4. Step 4: Simplify right side
   4,129,764x = 78,450,487,843,984
5. Step 5: Solve for x
   x = 78,450,487,843,984/4,129,764
6. Step 6: Final answer
   x = 18,996,361.01