Finding the Third Proportional to 4,443,018 and 9,688,854

Step by Step Solution

1. Step 1: Write the proportion equation
   4,443,018 : 9,688,854 = 9,688,854 : x
2. Step 2: Convert to fraction form
   4,443,018/9,688,854 = 9,688,854/x
3. Step 3: Cross multiply
   4,443,018x = 9,688,854 × 9,688,854
4. Step 4: Simplify right side
   4,443,018x = 93,873,891,833,316
5. Step 5: Solve for x
   x = 93,873,891,833,316/4,443,018
6. Step 6: Final answer
   x = 21,128,406.82