Finding the Third Proportional to 329,200.50 and 493,638

Step by Step Solution

1. Step 1: Write the proportion equation
   329,200.50 : 493,638 = 493,638 : x
2. Step 2: Convert to fraction form
   329,200.50/493,638 = 493,638/x
3. Step 3: Cross multiply
   329,200.50x = 493,638 × 493,638
4. Step 4: Simplify right side
   329,200.50x = 243,678,475,044
5. Step 5: Solve for x
   x = 243,678,475,044/329,200.50
6. Step 6: Final answer
   x = 740,212.96