Finding the Third Proportional to 311,494.50 and 681,957

Step by Step Solution

1. Step 1: Write the proportion equation
   311,494.50 : 681,957 = 681,957 : x
2. Step 2: Convert to fraction form
   311,494.50/681,957 = 681,957/x
3. Step 3: Cross multiply
   311,494.50x = 681,957 × 681,957
4. Step 4: Simplify right side
   311,494.50x = 465,065,349,849
5. Step 5: Solve for x
   x = 465,065,349,849/311,494.50
6. Step 6: Final answer
   x = 1,493,013.04