Finding the Third Proportional to 139,984.50 and 303,296.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,984.50 : 303,296.50 = 303,296.50 : x
2. Step 2: Convert to fraction form
   139,984.50/303,296.50 = 303,296.50/x
3. Step 3: Cross multiply
   139,984.50x = 303,296.50 × 303,296.50
4. Step 4: Simplify right side
   139,984.50x = 91,988,766,912.25
5. Step 5: Solve for x
   x = 91,988,766,912.25/139,984.50
6. Step 6: Final answer
   x = 657,135.38