Finding the Third Proportional to 405,659.25 and 867,600

Step by Step Solution

1. Step 1: Write the proportion equation
   405,659.25 : 867,600 = 867,600 : x
2. Step 2: Convert to fraction form
   405,659.25/867,600 = 867,600/x
3. Step 3: Cross multiply
   405,659.25x = 867,600 × 867,600
4. Step 4: Simplify right side
   405,659.25x = 752,729,760,000
5. Step 5: Solve for x
   x = 752,729,760,000/405,659.25
6. Step 6: Final answer
   x = 1,855,571.54