Finding the Third Proportional to 665,199 and 996,772.50

Step by Step Solution

1. Step 1: Write the proportion equation
   665,199 : 996,772.50 = 996,772.50 : x
2. Step 2: Convert to fraction form
   665,199/996,772.50 = 996,772.50/x
3. Step 3: Cross multiply
   665,199x = 996,772.50 × 996,772.50
4. Step 4: Simplify right side
   665,199x = 993,555,416,756.25
5. Step 5: Solve for x
   x = 993,555,416,756.25/665,199
6. Step 6: Final answer
   x = 1,493,621.33