Finding the Third Proportional to 154,570 and 325,745.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,570 : 325,745.50 = 325,745.50 : x
2. Step 2: Convert to fraction form
   154,570/325,745.50 = 325,745.50/x
3. Step 3: Cross multiply
   154,570x = 325,745.50 × 325,745.50
4. Step 4: Simplify right side
   154,570x = 106,110,130,770.25
5. Step 5: Solve for x
   x = 106,110,130,770.25/154,570
6. Step 6: Final answer
   x = 686,485.93