Finding the Third Proportional to 656,856 and 997,620.75

Step by Step Solution

1. Step 1: Write the proportion equation
   656,856 : 997,620.75 = 997,620.75 : x
2. Step 2: Convert to fraction form
   656,856/997,620.75 = 997,620.75/x
3. Step 3: Cross multiply
   656,856x = 997,620.75 × 997,620.75
4. Step 4: Simplify right side
   656,856x = 995,247,160,830.56
5. Step 5: Solve for x
   x = 995,247,160,830.56/656,856
6. Step 6: Final answer
   x = 1,515,167.95