Finding the Third Proportional to 325,606.50 and 676,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   325,606.50 : 676,147.50 = 676,147.50 : x
2. Step 2: Convert to fraction form
   325,606.50/676,147.50 = 676,147.50/x
3. Step 3: Cross multiply
   325,606.50x = 676,147.50 × 676,147.50
4. Step 4: Simplify right side
   325,606.50x = 457,175,441,756.25
5. Step 5: Solve for x
   x = 457,175,441,756.25/325,606.50
6. Step 6: Final answer
   x = 1,404,073.45