Finding the Third Proportional to 4,486,357 and 9,784,738

Step by Step Solution

1. Step 1: Write the proportion equation
   4,486,357 : 9,784,738 = 9,784,738 : x
2. Step 2: Convert to fraction form
   4,486,357/9,784,738 = 9,784,738/x
3. Step 3: Cross multiply
   4,486,357x = 9,784,738 × 9,784,738
4. Step 4: Simplify right side
   4,486,357x = 95,741,097,728,644
5. Step 5: Solve for x
   x = 95,741,097,728,644/4,486,357
6. Step 6: Final answer
   x = 21,340,499.15