Finding the Third Proportional to 997,738.50 and 2,188,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   997,738.50 : 2,188,621.50 = 2,188,621.50 : x
2. Step 2: Convert to fraction form
   997,738.50/2,188,621.50 = 2,188,621.50/x
3. Step 3: Cross multiply
   997,738.50x = 2,188,621.50 × 2,188,621.50
4. Step 4: Simplify right side
   997,738.50x = 4,790,064,070,262.25
5. Step 5: Solve for x
   x = 4,790,064,070,262.25/997,738.50
6. Step 6: Final answer
   x = 4,800,921.35