Finding the Third Proportional to 317,772 and 681,592.50

Step by Step Solution

1. Step 1: Write the proportion equation
   317,772 : 681,592.50 = 681,592.50 : x
2. Step 2: Convert to fraction form
   317,772/681,592.50 = 681,592.50/x
3. Step 3: Cross multiply
   317,772x = 681,592.50 × 681,592.50
4. Step 4: Simplify right side
   317,772x = 464,568,336,056.25
5. Step 5: Solve for x
   x = 464,568,336,056.25/317,772
6. Step 6: Final answer
   x = 1,461,954.91