Finding the Third Proportional to 139,376 and 303,616

Step by Step Solution

1. Step 1: Write the proportion equation
   139,376 : 303,616 = 303,616 : x
2. Step 2: Convert to fraction form
   139,376/303,616 = 303,616/x
3. Step 3: Cross multiply
   139,376x = 303,616 × 303,616
4. Step 4: Simplify right side
   139,376x = 92,182,675,456
5. Step 5: Solve for x
   x = 92,182,675,456/139,376
6. Step 6: Final answer
   x = 661,395.62