Finding the Third Proportional to 828,578 and 1,815,248

Step by Step Solution

1. Step 1: Write the proportion equation
   828,578 : 1,815,248 = 1,815,248 : x
2. Step 2: Convert to fraction form
   828,578/1,815,248 = 1,815,248/x
3. Step 3: Cross multiply
   828,578x = 1,815,248 × 1,815,248
4. Step 4: Simplify right side
   828,578x = 3,295,125,301,504
5. Step 5: Solve for x
   x = 3,295,125,301,504/828,578
6. Step 6: Final answer
   x = 3,976,843.82