Finding the Third Proportional to 139,144 and 304,528

Step by Step Solution

1. Step 1: Write the proportion equation
   139,144 : 304,528 = 304,528 : x
2. Step 2: Convert to fraction form
   139,144/304,528 = 304,528/x
3. Step 3: Cross multiply
   139,144x = 304,528 × 304,528
4. Step 4: Simplify right side
   139,144x = 92,737,302,784
5. Step 5: Solve for x
   x = 92,737,302,784/139,144
6. Step 6: Final answer
   x = 666,484.38