Finding the Third Proportional to 10,989,870 and 16,811,181

Step by Step Solution

1. Step 1: Write the proportion equation
   10,989,870 : 16,811,181 = 16,811,181 : x
2. Step 2: Convert to fraction form
   10,989,870/16,811,181 = 16,811,181/x
3. Step 3: Cross multiply
   10,989,870x = 16,811,181 × 16,811,181
4. Step 4: Simplify right side
   10,989,870x = 282,615,806,614,761
5. Step 5: Solve for x
   x = 282,615,806,614,761/10,989,870
6. Step 6: Final answer
   x = 25,716,028.18