Finding the Third Proportional to 613,939.50 and 1,258,308

Step by Step Solution

1. Step 1: Write the proportion equation
   613,939.50 : 1,258,308 = 1,258,308 : x
2. Step 2: Convert to fraction form
   613,939.50/1,258,308 = 1,258,308/x
3. Step 3: Cross multiply
   613,939.50x = 1,258,308 × 1,258,308
4. Step 4: Simplify right side
   613,939.50x = 1,583,339,022,864
5. Step 5: Solve for x
   x = 1,583,339,022,864/613,939.50
6. Step 6: Final answer
   x = 2,578,982.17