Finding the Third Proportional to 326,727 and 490,090.50

Step by Step Solution

1. Step 1: Write the proportion equation
   326,727 : 490,090.50 = 490,090.50 : x
2. Step 2: Convert to fraction form
   326,727/490,090.50 = 490,090.50/x
3. Step 3: Cross multiply
   326,727x = 490,090.50 × 490,090.50
4. Step 4: Simplify right side
   326,727x = 240,188,698,190.25
5. Step 5: Solve for x
   x = 240,188,698,190.25/326,727
6. Step 6: Final answer
   x = 735,135.75