Finding the Third Proportional to 199,686 and 301,608

Step by Step Solution

1. Step 1: Write the proportion equation
   199,686 : 301,608 = 301,608 : x
2. Step 2: Convert to fraction form
   199,686/301,608 = 301,608/x
3. Step 3: Cross multiply
   199,686x = 301,608 × 301,608
4. Step 4: Simplify right side
   199,686x = 90,967,385,664
5. Step 5: Solve for x
   x = 90,967,385,664/199,686
6. Step 6: Final answer
   x = 455,552.15