Finding the Third Proportional to 139,458 and 304,836

Step by Step Solution

1. Step 1: Write the proportion equation
   139,458 : 304,836 = 304,836 : x
2. Step 2: Convert to fraction form
   139,458/304,836 = 304,836/x
3. Step 3: Cross multiply
   139,458x = 304,836 × 304,836
4. Step 4: Simplify right side
   139,458x = 92,924,986,896
5. Step 5: Solve for x
   x = 92,924,986,896/139,458
6. Step 6: Final answer
   x = 666,329.55