Finding the Third Proportional to 144,298 and 319,736

Step by Step Solution

1. Step 1: Write the proportion equation
   144,298 : 319,736 = 319,736 : x
2. Step 2: Convert to fraction form
   144,298/319,736 = 319,736/x
3. Step 3: Cross multiply
   144,298x = 319,736 × 319,736
4. Step 4: Simplify right side
   144,298x = 102,231,109,696
5. Step 5: Solve for x
   x = 102,231,109,696/144,298
6. Step 6: Final answer
   x = 708,472.12