Finding the Third Proportional to 71,428.50 and 155,556

Step by Step Solution

1. Step 1: Write the proportion equation
   71,428.50 : 155,556 = 155,556 : x
2. Step 2: Convert to fraction form
   71,428.50/155,556 = 155,556/x
3. Step 3: Cross multiply
   71,428.50x = 155,556 × 155,556
4. Step 4: Simplify right side
   71,428.50x = 24,197,669,136
5. Step 5: Solve for x
   x = 24,197,669,136/71,428.50
6. Step 6: Final answer
   x = 338,767.71