Finding the Third Proportional to 578,424.38 and 1,245,665.25

Step by Step Solution

1. Step 1: Write the proportion equation
   578,424.38 : 1,245,665.25 = 1,245,665.25 : x
2. Step 2: Convert to fraction form
   578,424.38/1,245,665.25 = 1,245,665.25/x
3. Step 3: Cross multiply
   578,424.38x = 1,245,665.25 × 1,245,665.25
4. Step 4: Simplify right side
   578,424.38x = 1,551,681,915,057.56
5. Step 5: Solve for x
   x = 1,551,681,915,057.56/578,424.38
6. Step 6: Final answer
   x = 2,682,601.19