Finding the Third Proportional to 4,721,666 and 10,131,508

Step by Step Solution

1. Step 1: Write the proportion equation
   4,721,666 : 10,131,508 = 10,131,508 : x
2. Step 2: Convert to fraction form
   4,721,666/10,131,508 = 10,131,508/x
3. Step 3: Cross multiply
   4,721,666x = 10,131,508 × 10,131,508
4. Step 4: Simplify right side
   4,721,666x = 102,647,454,354,064
5. Step 5: Solve for x
   x = 102,647,454,354,064/4,721,666
6. Step 6: Final answer
   x = 21,739,668.66