Finding the Third Proportional to 4,443,019 and 9,688,856

Step by Step Solution

1. Step 1: Write the proportion equation
   4,443,019 : 9,688,856 = 9,688,856 : x
2. Step 2: Convert to fraction form
   4,443,019/9,688,856 = 9,688,856/x
3. Step 3: Cross multiply
   4,443,019x = 9,688,856 × 9,688,856
4. Step 4: Simplify right side
   4,443,019x = 93,873,930,588,736
5. Step 5: Solve for x
   x = 93,873,930,588,736/4,443,019
6. Step 6: Final answer
   x = 21,128,410.79