Finding the Third Proportional to 320,166 and 481,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,166 : 481,099.50 = 481,099.50 : x
2. Step 2: Convert to fraction form
   320,166/481,099.50 = 481,099.50/x
3. Step 3: Cross multiply
   320,166x = 481,099.50 × 481,099.50
4. Step 4: Simplify right side
   320,166x = 231,456,728,900.25
5. Step 5: Solve for x
   x = 231,456,728,900.25/320,166
6. Step 6: Final answer
   x = 722,927.26