Finding the Third Proportional to 139,896 and 304,618.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,896 : 304,618.50 = 304,618.50 : x
2. Step 2: Convert to fraction form
   139,896/304,618.50 = 304,618.50/x
3. Step 3: Cross multiply
   139,896x = 304,618.50 × 304,618.50
4. Step 4: Simplify right side
   139,896x = 92,792,430,542.25
5. Step 5: Solve for x
   x = 92,792,430,542.25/139,896
6. Step 6: Final answer
   x = 663,295.81