Finding the Third Proportional to 328,851 and 493,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,851 : 493,320.50 = 493,320.50 : x
2. Step 2: Convert to fraction form
   328,851/493,320.50 = 493,320.50/x
3. Step 3: Cross multiply
   328,851x = 493,320.50 × 493,320.50
4. Step 4: Simplify right side
   328,851x = 243,365,115,720.25
5. Step 5: Solve for x
   x = 243,365,115,720.25/328,851
6. Step 6: Final answer
   x = 740,046.76