Finding the Third Proportional to 190,016 and 401,488

Step by Step Solution

1. Step 1: Write the proportion equation
   190,016 : 401,488 = 401,488 : x
2. Step 2: Convert to fraction form
   190,016/401,488 = 401,488/x
3. Step 3: Cross multiply
   190,016x = 401,488 × 401,488
4. Step 4: Simplify right side
   190,016x = 161,192,614,144
5. Step 5: Solve for x
   x = 161,192,614,144/190,016
6. Step 6: Final answer
   x = 848,310.74