Finding the Third Proportional to 656,212.50 and 997,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   656,212.50 : 997,591.50 = 997,591.50 : x
2. Step 2: Convert to fraction form
   656,212.50/997,591.50 = 997,591.50/x
3. Step 3: Cross multiply
   656,212.50x = 997,591.50 × 997,591.50
4. Step 4: Simplify right side
   656,212.50x = 995,188,800,872.25
5. Step 5: Solve for x
   x = 995,188,800,872.25/656,212.50
6. Step 6: Final answer
   x = 1,516,564.83