Finding the Third Proportional to 143,327 and 298,418

Step by Step Solution

1. Step 1: Write the proportion equation
   143,327 : 298,418 = 298,418 : x
2. Step 2: Convert to fraction form
   143,327/298,418 = 298,418/x
3. Step 3: Cross multiply
   143,327x = 298,418 × 298,418
4. Step 4: Simplify right side
   143,327x = 89,053,302,724
5. Step 5: Solve for x
   x = 89,053,302,724/143,327
6. Step 6: Final answer
   x = 621,329.57