Finding the Third Proportional to 389,535 and 608,906.25

Step by Step Solution

1. Step 1: Write the proportion equation
   389,535 : 608,906.25 = 608,906.25 : x
2. Step 2: Convert to fraction form
   389,535/608,906.25 = 608,906.25/x
3. Step 3: Cross multiply
   389,535x = 608,906.25 × 608,906.25
4. Step 4: Simplify right side
   389,535x = 370,766,821,289.06
5. Step 5: Solve for x
   x = 370,766,821,289.06/389,535
6. Step 6: Final answer
   x = 951,819.02