Finding the Third Proportional to 1,336,220 and 1,815,419

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336,220 : 1,815,419 = 1,815,419 : x
2. Step 2: Convert to fraction form
   1,336,220/1,815,419 = 1,815,419/x
3. Step 3: Cross multiply
   1,336,220x = 1,815,419 × 1,815,419
4. Step 4: Simplify right side
   1,336,220x = 3,295,746,145,561
5. Step 5: Solve for x
   x = 3,295,746,145,561/1,336,220
6. Step 6: Final answer
   x = 2,466,469.70