Finding the Third Proportional to 7,867,121 and 12,150,062

Step by Step Solution

1. Step 1: Write the proportion equation
   7,867,121 : 12,150,062 = 12,150,062 : x
2. Step 2: Convert to fraction form
   7,867,121/12,150,062 = 12,150,062/x
3. Step 3: Cross multiply
   7,867,121x = 12,150,062 × 12,150,062
4. Step 4: Simplify right side
   7,867,121x = 147,624,006,603,844
5. Step 5: Solve for x
   x = 147,624,006,603,844/7,867,121
6. Step 6: Final answer
   x = 18,764,679.81