Finding the Third Proportional to 154,556 and 325,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,556 : 325,716.50 = 325,716.50 : x
2. Step 2: Convert to fraction form
   154,556/325,716.50 = 325,716.50/x
3. Step 3: Cross multiply
   154,556x = 325,716.50 × 325,716.50
4. Step 4: Simplify right side
   154,556x = 106,091,238,372.25
5. Step 5: Solve for x
   x = 106,091,238,372.25/154,556
6. Step 6: Final answer
   x = 686,425.88