Finding the Third Proportional to 822,448 and 1,290,473

Step by Step Solution

1. Step 1: Write the proportion equation
   822,448 : 1,290,473 = 1,290,473 : x
2. Step 2: Convert to fraction form
   822,448/1,290,473 = 1,290,473/x
3. Step 3: Cross multiply
   822,448x = 1,290,473 × 1,290,473
4. Step 4: Simplify right side
   822,448x = 1,665,320,563,729
5. Step 5: Solve for x
   x = 1,665,320,563,729/822,448
6. Step 6: Final answer
   x = 2,024,833.87