Finding the Third Proportional to 319,732.50 and 681,320

Step by Step Solution

1. Step 1: Write the proportion equation
   319,732.50 : 681,320 = 681,320 : x
2. Step 2: Convert to fraction form
   319,732.50/681,320 = 681,320/x
3. Step 3: Cross multiply
   319,732.50x = 681,320 × 681,320
4. Step 4: Simplify right side
   319,732.50x = 464,196,942,400
5. Step 5: Solve for x
   x = 464,196,942,400/319,732.50
6. Step 6: Final answer
   x = 1,451,829.08