Finding the Third Proportional to 142,280 and 329,348

Step by Step Solution

1. Step 1: Write the proportion equation
   142,280 : 329,348 = 329,348 : x
2. Step 2: Convert to fraction form
   142,280/329,348 = 329,348/x
3. Step 3: Cross multiply
   142,280x = 329,348 × 329,348
4. Step 4: Simplify right side
   142,280x = 108,470,105,104
5. Step 5: Solve for x
   x = 108,470,105,104/142,280
6. Step 6: Final answer
   x = 762,370.71