Finding the Third Proportional to 323,746.50 and 660,345

Step by Step Solution

1. Step 1: Write the proportion equation
   323,746.50 : 660,345 = 660,345 : x
2. Step 2: Convert to fraction form
   323,746.50/660,345 = 660,345/x
3. Step 3: Cross multiply
   323,746.50x = 660,345 × 660,345
4. Step 4: Simplify right side
   323,746.50x = 436,055,519,025
5. Step 5: Solve for x
   x = 436,055,519,025/323,746.50
6. Step 6: Final answer
   x = 1,346,904.20