Finding the Third Proportional to 144,898 and 320,895

Step by Step Solution

1. Step 1: Write the proportion equation
   144,898 : 320,895 = 320,895 : x
2. Step 2: Convert to fraction form
   144,898/320,895 = 320,895/x
3. Step 3: Cross multiply
   144,898x = 320,895 × 320,895
4. Step 4: Simplify right side
   144,898x = 102,973,601,025
5. Step 5: Solve for x
   x = 102,973,601,025/144,898
6. Step 6: Final answer
   x = 710,662.68