Finding the Third Proportional to 139,148 and 303,136

Step by Step Solution

1. Step 1: Write the proportion equation
   139,148 : 303,136 = 303,136 : x
2. Step 2: Convert to fraction form
   139,148/303,136 = 303,136/x
3. Step 3: Cross multiply
   139,148x = 303,136 × 303,136
4. Step 4: Simplify right side
   139,148x = 91,891,434,496
5. Step 5: Solve for x
   x = 91,891,434,496/139,148
6. Step 6: Final answer
   x = 660,386.31