Finding the Third Proportional to 4,477,680 and 9,662,976

Step by Step Solution

1. Step 1: Write the proportion equation
   4,477,680 : 9,662,976 = 9,662,976 : x
2. Step 2: Convert to fraction form
   4,477,680/9,662,976 = 9,662,976/x
3. Step 3: Cross multiply
   4,477,680x = 9,662,976 × 9,662,976
4. Step 4: Simplify right side
   4,477,680x = 93,373,105,176,576
5. Step 5: Solve for x
   x = 93,373,105,176,576/4,477,680
6. Step 6: Final answer
   x = 20,853,009.86