Finding the Third Proportional to 12,551,990 and 19,396,016

Step by Step Solution

1. Step 1: Write the proportion equation
   12,551,990 : 19,396,016 = 19,396,016 : x
2. Step 2: Convert to fraction form
   12,551,990/19,396,016 = 19,396,016/x
3. Step 3: Cross multiply
   12,551,990x = 19,396,016 × 19,396,016
4. Step 4: Simplify right side
   12,551,990x = 376,205,436,672,256
5. Step 5: Solve for x
   x = 376,205,436,672,256/12,551,990
6. Step 6: Final answer
   x = 29,971,776.32