Finding the Third Proportional to 10,989,872 and 16,811,184

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989,872 : 16,811,184 = 16,811,184 : x
2. Step 2: Convert to fraction form
   10,989,872/16,811,184 = 16,811,184/x
3. Step 3: Cross multiply
   10,989,872x = 16,811,184 × 16,811,184
4. Step 4: Simplify right side
   10,989,872x = 282,615,907,481,856
5. Step 5: Solve for x
   x = 282,615,907,481,856/10,989,872
6. Step 6: Final answer
   x = 25,716,032.68