Finding the Third Proportional to 283,430.50 and 622,150.50

Step by Step Solution

1. Step 1: Write the proportion equation
   283,430.50 : 622,150.50 = 622,150.50 : x
2. Step 2: Convert to fraction form
   283,430.50/622,150.50 = 622,150.50/x
3. Step 3: Cross multiply
   283,430.50x = 622,150.50 × 622,150.50
4. Step 4: Simplify right side
   283,430.50x = 387,071,244,650.25
5. Step 5: Solve for x
   x = 387,071,244,650.25/283,430.50
6. Step 6: Final answer
   x = 1,365,665.46