Finding the Third Proportional to 5,072,326 and 10,321,799

Step by Step Solution

1. Step 1: Write the proportion equation
   5,072,326 : 10,321,799 = 10,321,799 : x
2. Step 2: Convert to fraction form
   5,072,326/10,321,799 = 10,321,799/x
3. Step 3: Cross multiply
   5,072,326x = 10,321,799 × 10,321,799
4. Step 4: Simplify right side
   5,072,326x = 106,539,534,596,401
5. Step 5: Solve for x
   x = 106,539,534,596,401/5,072,326
6. Step 6: Final answer
   x = 21,004,078.72