Finding the Third Proportional to 404,724 and 613,136

Step by Step Solution

1. Step 1: Write the proportion equation
   404,724 : 613,136 = 613,136 : x
2. Step 2: Convert to fraction form
   404,724/613,136 = 613,136/x
3. Step 3: Cross multiply
   404,724x = 613,136 × 613,136
4. Step 4: Simplify right side
   404,724x = 375,935,754,496
5. Step 5: Solve for x
   x = 375,935,754,496/404,724
6. Step 6: Final answer
   x = 928,869.44