Finding the Third Proportional to 139,168 and 304,328

Step by Step Solution

1. Step 1: Write the proportion equation
   139,168 : 304,328 = 304,328 : x
2. Step 2: Convert to fraction form
   139,168/304,328 = 304,328/x
3. Step 3: Cross multiply
   139,168x = 304,328 × 304,328
4. Step 4: Simplify right side
   139,168x = 92,615,531,584
5. Step 5: Solve for x
   x = 92,615,531,584/139,168
6. Step 6: Final answer
   x = 665,494.45