Finding the Third Proportional to 139,040 and 303,576

Step by Step Solution

1. Step 1: Write the proportion equation
   139,040 : 303,576 = 303,576 : x
2. Step 2: Convert to fraction form
   139,040/303,576 = 303,576/x
3. Step 3: Cross multiply
   139,040x = 303,576 × 303,576
4. Step 4: Simplify right side
   139,040x = 92,158,387,776
5. Step 5: Solve for x
   x = 92,158,387,776/139,040
6. Step 6: Final answer
   x = 662,819.24