Finding the Third Proportional to 139,388 and 303,112

Step by Step Solution

1. Step 1: Write the proportion equation
   139,388 : 303,112 = 303,112 : x
2. Step 2: Convert to fraction form
   139,388/303,112 = 303,112/x
3. Step 3: Cross multiply
   139,388x = 303,112 × 303,112
4. Step 4: Simplify right side
   139,388x = 91,876,884,544
5. Step 5: Solve for x
   x = 91,876,884,544/139,388
6. Step 6: Final answer
   x = 659,144.87