Finding the Third Proportional to 4,703,724 and 9,972,652

Step by Step Solution

1. Step 1: Write the proportion equation
   4,703,724 : 9,972,652 = 9,972,652 : x
2. Step 2: Convert to fraction form
   4,703,724/9,972,652 = 9,972,652/x
3. Step 3: Cross multiply
   4,703,724x = 9,972,652 × 9,972,652
4. Step 4: Simplify right side
   4,703,724x = 99,453,787,913,104
5. Step 5: Solve for x
   x = 99,453,787,913,104/4,703,724
6. Step 6: Final answer
   x = 21,143,627.46