Finding the Third Proportional to 828,570 and 1,815,291

Step by Step Solution

1. Step 1: Write the proportion equation
   828,570 : 1,815,291 = 1,815,291 : x
2. Step 2: Convert to fraction form
   828,570/1,815,291 = 1,815,291/x
3. Step 3: Cross multiply
   828,570x = 1,815,291 × 1,815,291
4. Step 4: Simplify right side
   828,570x = 3,295,281,414,681
5. Step 5: Solve for x
   x = 3,295,281,414,681/828,570
6. Step 6: Final answer
   x = 3,977,070.63