Finding the Third Proportional to 393,016 and 842,064

Step by Step Solution

1. Step 1: Write the proportion equation
   393,016 : 842,064 = 842,064 : x
2. Step 2: Convert to fraction form
   393,016/842,064 = 842,064/x
3. Step 3: Cross multiply
   393,016x = 842,064 × 842,064
4. Step 4: Simplify right side
   393,016x = 709,071,780,096
5. Step 5: Solve for x
   x = 709,071,780,096/393,016
6. Step 6: Final answer
   x = 1,804,180.44