Finding the Third Proportional to 326,920.50 and 495,270

Step by Step Solution

1. Step 1: Write the proportion equation
   326,920.50 : 495,270 = 495,270 : x
2. Step 2: Convert to fraction form
   326,920.50/495,270 = 495,270/x
3. Step 3: Cross multiply
   326,920.50x = 495,270 × 495,270
4. Step 4: Simplify right side
   326,920.50x = 245,292,372,900
5. Step 5: Solve for x
   x = 245,292,372,900/326,920.50
6. Step 6: Final answer
   x = 750,312.00