Finding the Third Proportional to 323,662 and 660,178

Step by Step Solution

1. Step 1: Write the proportion equation
   323,662 : 660,178 = 660,178 : x
2. Step 2: Convert to fraction form
   323,662/660,178 = 660,178/x
3. Step 3: Cross multiply
   323,662x = 660,178 × 660,178
4. Step 4: Simplify right side
   323,662x = 435,834,991,684
5. Step 5: Solve for x
   x = 435,834,991,684/323,662
6. Step 6: Final answer
   x = 1,346,574.49