Finding the Third Proportional to 7,781,022 and 12,501,864

Step by Step Solution

1. Step 1: Write the proportion equation
   7,781,022 : 12,501,864 = 12,501,864 : x
2. Step 2: Convert to fraction form
   7,781,022/12,501,864 = 12,501,864/x
3. Step 3: Cross multiply
   7,781,022x = 12,501,864 × 12,501,864
4. Step 4: Simplify right side
   7,781,022x = 156,296,603,474,496
5. Step 5: Solve for x
   x = 156,296,603,474,496/7,781,022
6. Step 6: Final answer
   x = 20,086,899.06