Finding the Third Proportional to 815,560 and 1,918,854

Step by Step Solution

1. Step 1: Write the proportion equation
   815,560 : 1,918,854 = 1,918,854 : x
2. Step 2: Convert to fraction form
   815,560/1,918,854 = 1,918,854/x
3. Step 3: Cross multiply
   815,560x = 1,918,854 × 1,918,854
4. Step 4: Simplify right side
   815,560x = 3,682,000,673,316
5. Step 5: Solve for x
   x = 3,682,000,673,316/815,560
6. Step 6: Final answer
   x = 4,514,690.12