Finding the Third Proportional to 179,442 and 388,608

Step by Step Solution

1. Step 1: Write the proportion equation
   179,442 : 388,608 = 388,608 : x
2. Step 2: Convert to fraction form
   179,442/388,608 = 388,608/x
3. Step 3: Cross multiply
   179,442x = 388,608 × 388,608
4. Step 4: Simplify right side
   179,442x = 151,016,177,664
5. Step 5: Solve for x
   x = 151,016,177,664/179,442
6. Step 6: Final answer
   x = 841,587.69