Finding the Third Proportional to 190,238.25 and 401,685

Step by Step Solution

1. Step 1: Write the proportion equation
   190,238.25 : 401,685 = 401,685 : x
2. Step 2: Convert to fraction form
   190,238.25/401,685 = 401,685/x
3. Step 3: Cross multiply
   190,238.25x = 401,685 × 401,685
4. Step 4: Simplify right side
   190,238.25x = 161,350,839,225
5. Step 5: Solve for x
   x = 161,350,839,225/190,238.25
6. Step 6: Final answer
   x = 848,151.41