Finding the Third Proportional to 6,644,138 and 10,249,536

Step by Step Solution

1. Step 1: Write the proportion equation
   6,644,138 : 10,249,536 = 10,249,536 : x
2. Step 2: Convert to fraction form
   6,644,138/10,249,536 = 10,249,536/x
3. Step 3: Cross multiply
   6,644,138x = 10,249,536 × 10,249,536
4. Step 4: Simplify right side
   6,644,138x = 105,052,988,215,296
5. Step 5: Solve for x
   x = 105,052,988,215,296/6,644,138
6. Step 6: Final answer
   x = 15,811,379.63