Finding the Third Proportional to 2,545,459.31 and 5,489,229.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545,459.31 : 5,489,229.38 = 5,489,229.38 : x
2. Step 2: Convert to fraction form
   2,545,459.31/5,489,229.38 = 5,489,229.38/x
3. Step 3: Cross multiply
   2,545,459.31x = 5,489,229.38 × 5,489,229.38
4. Step 4: Simplify right side
   2,545,459.31x = 30,131,639,131,362.89
5. Step 5: Solve for x
   x = 30,131,639,131,362.89/2,545,459.31
6. Step 6: Final answer
   x = 11,837,407.49