Finding the Third Proportional to 4,322,388 and 9,405,864

Step by Step Solution

1. Step 1: Write the proportion equation
   4,322,388 : 9,405,864 = 9,405,864 : x
2. Step 2: Convert to fraction form
   4,322,388/9,405,864 = 9,405,864/x
3. Step 3: Cross multiply
   4,322,388x = 9,405,864 × 9,405,864
4. Step 4: Simplify right side
   4,322,388x = 88,470,277,586,496
5. Step 5: Solve for x
   x = 88,470,277,586,496/4,322,388
6. Step 6: Final answer
   x = 20,467,916.71