Finding the Third Proportional to 1,271,609 and 1,782,420

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271,609 : 1,782,420 = 1,782,420 : x
2. Step 2: Convert to fraction form
   1,271,609/1,782,420 = 1,782,420/x
3. Step 3: Cross multiply
   1,271,609x = 1,782,420 × 1,782,420
4. Step 4: Simplify right side
   1,271,609x = 3,177,021,056,400
5. Step 5: Solve for x
   x = 3,177,021,056,400/1,271,609
6. Step 6: Final answer
   x = 2,498,426.05