Finding the Third Proportional to 828,574 and 1,815,240

Step by Step Solution

1. Step 1: Write the proportion equation
   828,574 : 1,815,240 = 1,815,240 : x
2. Step 2: Convert to fraction form
   828,574/1,815,240 = 1,815,240/x
3. Step 3: Cross multiply
   828,574x = 1,815,240 × 1,815,240
4. Step 4: Simplify right side
   828,574x = 3,295,096,257,600
5. Step 5: Solve for x
   x = 3,295,096,257,600/828,574
6. Step 6: Final answer
   x = 3,976,827.97