Finding the Third Proportional to 151,204 and 322,280

Step by Step Solution

1. Step 1: Write the proportion equation
   151,204 : 322,280 = 322,280 : x
2. Step 2: Convert to fraction form
   151,204/322,280 = 322,280/x
3. Step 3: Cross multiply
   151,204x = 322,280 × 322,280
4. Step 4: Simplify right side
   151,204x = 103,864,398,400
5. Step 5: Solve for x
   x = 103,864,398,400/151,204
6. Step 6: Final answer
   x = 686,915.68