Finding the Third Proportional to 326,673 and 490,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   326,673 : 490,009.50 = 490,009.50 : x
2. Step 2: Convert to fraction form
   326,673/490,009.50 = 490,009.50/x
3. Step 3: Cross multiply
   326,673x = 490,009.50 × 490,009.50
4. Step 4: Simplify right side
   326,673x = 240,109,310,090.25
5. Step 5: Solve for x
   x = 240,109,310,090.25/326,673
6. Step 6: Final answer
   x = 735,014.25