Finding the Third Proportional to 12,189,450 and 25,387,813

Step by Step Solution

1. Step 1: Write the proportion equation
   12,189,450 : 25,387,813 = 25,387,813 : x
2. Step 2: Convert to fraction form
   12,189,450/25,387,813 = 25,387,813/x
3. Step 3: Cross multiply
   12,189,450x = 25,387,813 × 25,387,813
4. Step 4: Simplify right side
   12,189,450x = 644,541,048,922,969
5. Step 5: Solve for x
   x = 644,541,048,922,969/12,189,450
6. Step 6: Final answer
   x = 52,876,959.09