Finding the Third Proportional to 323,144 and 661,960

Step by Step Solution

1. Step 1: Write the proportion equation
   323,144 : 661,960 = 661,960 : x
2. Step 2: Convert to fraction form
   323,144/661,960 = 661,960/x
3. Step 3: Cross multiply
   323,144x = 661,960 × 661,960
4. Step 4: Simplify right side
   323,144x = 438,191,041,600
5. Step 5: Solve for x
   x = 438,191,041,600/323,144
6. Step 6: Final answer
   x = 1,356,024.07