Finding the Third Proportional to 12,183,870 and 16,172,961

Step by Step Solution

1. Step 1: Write the proportion equation
   12,183,870 : 16,172,961 = 16,172,961 : x
2. Step 2: Convert to fraction form
   12,183,870/16,172,961 = 16,172,961/x
3. Step 3: Cross multiply
   12,183,870x = 16,172,961 × 16,172,961
4. Step 4: Simplify right side
   12,183,870x = 261,564,667,507,521
5. Step 5: Solve for x
   x = 261,564,667,507,521/12,183,870
6. Step 6: Final answer
   x = 21,468,110.50