Finding the Third Proportional to 139,185 and 303,210

Step by Step Solution

1. Step 1: Write the proportion equation
   139,185 : 303,210 = 303,210 : x
2. Step 2: Convert to fraction form
   139,185/303,210 = 303,210/x
3. Step 3: Cross multiply
   139,185x = 303,210 × 303,210
4. Step 4: Simplify right side
   139,185x = 91,936,304,100
5. Step 5: Solve for x
   x = 91,936,304,100/139,185
6. Step 6: Final answer
   x = 660,533.13