Finding the Third Proportional to 815,569 and 1,918,868

Step by Step Solution

1. Step 1: Write the proportion equation
   815,569 : 1,918,868 = 1,918,868 : x
2. Step 2: Convert to fraction form
   815,569/1,918,868 = 1,918,868/x
3. Step 3: Cross multiply
   815,569x = 1,918,868 × 1,918,868
4. Step 4: Simplify right side
   815,569x = 3,682,054,401,424
5. Step 5: Solve for x
   x = 3,682,054,401,424/815,569
6. Step 6: Final answer
   x = 4,514,706.18