Finding the Third Proportional to 319,131 and 681,150

Step by Step Solution

1. Step 1: Write the proportion equation
   319,131 : 681,150 = 681,150 : x
2. Step 2: Convert to fraction form
   319,131/681,150 = 681,150/x
3. Step 3: Cross multiply
   319,131x = 681,150 × 681,150
4. Step 4: Simplify right side
   319,131x = 463,965,322,500
5. Step 5: Solve for x
   x = 463,965,322,500/319,131
6. Step 6: Final answer
   x = 1,453,839.72