Finding the Third Proportional to 139,806 and 303,912

Step by Step Solution

1. Step 1: Write the proportion equation
   139,806 : 303,912 = 303,912 : x
2. Step 2: Convert to fraction form
   139,806/303,912 = 303,912/x
3. Step 3: Cross multiply
   139,806x = 303,912 × 303,912
4. Step 4: Simplify right side
   139,806x = 92,362,503,744
5. Step 5: Solve for x
   x = 92,362,503,744/139,806
6. Step 6: Final answer
   x = 660,647.64