Finding the Third Proportional to 4,703,722 and 9,972,648

Step by Step Solution

1. Step 1: Write the proportion equation
   4,703,722 : 9,972,648 = 9,972,648 : x
2. Step 2: Convert to fraction form
   4,703,722/9,972,648 = 9,972,648/x
3. Step 3: Cross multiply
   4,703,722x = 9,972,648 × 9,972,648
4. Step 4: Simplify right side
   4,703,722x = 99,453,708,131,904
5. Step 5: Solve for x
   x = 99,453,708,131,904/4,703,722
6. Step 6: Final answer
   x = 21,143,619.49