Finding the Third Proportional to 331,300 and 715,056

Step by Step Solution

1. Step 1: Write the proportion equation
   331,300 : 715,056 = 715,056 : x
2. Step 2: Convert to fraction form
   331,300/715,056 = 715,056/x
3. Step 3: Cross multiply
   331,300x = 715,056 × 715,056
4. Step 4: Simplify right side
   331,300x = 511,305,083,136
5. Step 5: Solve for x
   x = 511,305,083,136/331,300
6. Step 6: Final answer
   x = 1,543,329.56