Finding the Third Proportional to 12,770,821 and 19,137,550.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,770,821 : 19,137,550.50 = 19,137,550.50 : x
2. Step 2: Convert to fraction form
   12,770,821/19,137,550.50 = 19,137,550.50/x
3. Step 3: Cross multiply
   12,770,821x = 19,137,550.50 × 19,137,550.50
4. Step 4: Simplify right side
   12,770,821x = 366,245,839,140,050.25
5. Step 5: Solve for x
   x = 366,245,839,140,050.25/12,770,821
6. Step 6: Final answer
   x = 28,678,331.58