Finding the Third Proportional to 139,160 and 304,576

Step by Step Solution

1. Step 1: Write the proportion equation
   139,160 : 304,576 = 304,576 : x
2. Step 2: Convert to fraction form
   139,160/304,576 = 304,576/x
3. Step 3: Cross multiply
   139,160x = 304,576 × 304,576
4. Step 4: Simplify right side
   139,160x = 92,766,539,776
5. Step 5: Solve for x
   x = 92,766,539,776/139,160
6. Step 6: Final answer
   x = 666,617.85