Finding the Third Proportional to 7,867,146 and 12,150,099

Step by Step Solution

1. Step 1: Write the proportion equation
   7,867,146 : 12,150,099 = 12,150,099 : x
2. Step 2: Convert to fraction form
   7,867,146/12,150,099 = 12,150,099/x
3. Step 3: Cross multiply
   7,867,146x = 12,150,099 × 12,150,099
4. Step 4: Simplify right side
   7,867,146x = 147,624,905,709,801
5. Step 5: Solve for x
   x = 147,624,905,709,801/7,867,146
6. Step 6: Final answer
   x = 18,764,734.47