Finding the Third Proportional to 196,918.25 and 401,059

Step by Step Solution

1. Step 1: Write the proportion equation
   196,918.25 : 401,059 = 401,059 : x
2. Step 2: Convert to fraction form
   196,918.25/401,059 = 401,059/x
3. Step 3: Cross multiply
   196,918.25x = 401,059 × 401,059
4. Step 4: Simplify right side
   196,918.25x = 160,848,321,481
5. Step 5: Solve for x
   x = 160,848,321,481/196,918.25
6. Step 6: Final answer
   x = 816,827.90