Finding the Third Proportional to 822,416 and 1,290,418

Step by Step Solution

1. Step 1: Write the proportion equation
   822,416 : 1,290,418 = 1,290,418 : x
2. Step 2: Convert to fraction form
   822,416/1,290,418 = 1,290,418/x
3. Step 3: Cross multiply
   822,416x = 1,290,418 × 1,290,418
4. Step 4: Simplify right side
   822,416x = 1,665,178,614,724
5. Step 5: Solve for x
   x = 1,665,178,614,724/822,416
6. Step 6: Final answer
   x = 2,024,740.05