Finding the Third Proportional to 664,181 and 1,025,629.50

Step by Step Solution

1. Step 1: Write the proportion equation
   664,181 : 1,025,629.50 = 1,025,629.50 : x
2. Step 2: Convert to fraction form
   664,181/1,025,629.50 = 1,025,629.50/x
3. Step 3: Cross multiply
   664,181x = 1,025,629.50 × 1,025,629.50
4. Step 4: Simplify right side
   664,181x = 1,051,915,871,270.25
5. Step 5: Solve for x
   x = 1,051,915,871,270.25/664,181
6. Step 6: Final answer
   x = 1,583,778.93