Finding the Third Proportional to 139,142 and 304,524

Step by Step Solution

1. Step 1: Write the proportion equation
   139,142 : 304,524 = 304,524 : x
2. Step 2: Convert to fraction form
   139,142/304,524 = 304,524/x
3. Step 3: Cross multiply
   139,142x = 304,524 × 304,524
4. Step 4: Simplify right side
   139,142x = 92,734,866,576
5. Step 5: Solve for x
   x = 92,734,866,576/139,142
6. Step 6: Final answer
   x = 666,476.45