Finding the Third Proportional to 12,183,780 and 16,172,869.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,183,780 : 16,172,869.50 = 16,172,869.50 : x
2. Step 2: Convert to fraction form
   12,183,780/16,172,869.50 = 16,172,869.50/x
3. Step 3: Cross multiply
   12,183,780x = 16,172,869.50 × 16,172,869.50
4. Step 4: Simplify right side
   12,183,780x = 261,561,707,864,030.25
5. Step 5: Solve for x
   x = 261,561,707,864,030.25/12,183,780
6. Step 6: Final answer
   x = 21,468,026.17