Finding the Third Proportional to 4,188,864 and 9,036,672

Step by Step Solution

1. Step 1: Write the proportion equation
   4,188,864 : 9,036,672 = 9,036,672 : x
2. Step 2: Convert to fraction form
   4,188,864/9,036,672 = 9,036,672/x
3. Step 3: Cross multiply
   4,188,864x = 9,036,672 × 9,036,672
4. Step 4: Simplify right side
   4,188,864x = 81,661,440,835,584
5. Step 5: Solve for x
   x = 81,661,440,835,584/4,188,864
6. Step 6: Final answer
   x = 19,494,889.51