Finding the Third Proportional to 91,338 and 200,136

Step by Step Solution

1. Step 1: Write the proportion equation
   91,338 : 200,136 = 200,136 : x
2. Step 2: Convert to fraction form
   91,338/200,136 = 200,136/x
3. Step 3: Cross multiply
   91,338x = 200,136 × 200,136
4. Step 4: Simplify right side
   91,338x = 40,054,418,496
5. Step 5: Solve for x
   x = 40,054,418,496/91,338
6. Step 6: Final answer
   x = 438,529.62