Finding the Third Proportional to 4,322,440 and 9,405,968

Step by Step Solution

1. Step 1: Write the proportion equation
   4,322,440 : 9,405,968 = 9,405,968 : x
2. Step 2: Convert to fraction form
   4,322,440/9,405,968 = 9,405,968/x
3. Step 3: Cross multiply
   4,322,440x = 9,405,968 × 9,405,968
4. Step 4: Simplify right side
   4,322,440x = 88,472,234,017,024
5. Step 5: Solve for x
   x = 88,472,234,017,024/4,322,440
6. Step 6: Final answer
   x = 20,468,123.10