Finding the Third Proportional to 323,743.50 and 660,339

Step by Step Solution

1. Step 1: Write the proportion equation
   323,743.50 : 660,339 = 660,339 : x
2. Step 2: Convert to fraction form
   323,743.50/660,339 = 660,339/x
3. Step 3: Cross multiply
   323,743.50x = 660,339 × 660,339
4. Step 4: Simplify right side
   323,743.50x = 436,047,594,921
5. Step 5: Solve for x
   x = 436,047,594,921/323,743.50
6. Step 6: Final answer
   x = 1,346,892.20