Finding the Third Proportional to 997,760 and 2,188,688

Step by Step Solution

1. Step 1: Write the proportion equation
   997,760 : 2,188,688 = 2,188,688 : x
2. Step 2: Convert to fraction form
   997,760/2,188,688 = 2,188,688/x
3. Step 3: Cross multiply
   997,760x = 2,188,688 × 2,188,688
4. Step 4: Simplify right side
   997,760x = 4,790,355,161,344
5. Step 5: Solve for x
   x = 4,790,355,161,344/997,760
6. Step 6: Final answer
   x = 4,801,109.65