Finding the Third Proportional to 220,968 and 490,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   220,968 : 490,900.50 = 490,900.50 : x
2. Step 2: Convert to fraction form
   220,968/490,900.50 = 490,900.50/x
3. Step 3: Cross multiply
   220,968x = 490,900.50 × 490,900.50
4. Step 4: Simplify right side
   220,968x = 240,983,300,900.25
5. Step 5: Solve for x
   x = 240,983,300,900.25/220,968
6. Step 6: Final answer
   x = 1,090,580.09