Finding the Third Proportional to 251,796.50 and 490,743.50

Step by Step Solution

1. Step 1: Write the proportion equation
   251,796.50 : 490,743.50 = 490,743.50 : x
2. Step 2: Convert to fraction form
   251,796.50/490,743.50 = 490,743.50/x
3. Step 3: Cross multiply
   251,796.50x = 490,743.50 × 490,743.50
4. Step 4: Simplify right side
   251,796.50x = 240,829,182,792.25
5. Step 5: Solve for x
   x = 240,829,182,792.25/251,796.50
6. Step 6: Final answer
   x = 956,443.73