Finding the Third Proportional to 824,418 and 1,311,390

Step by Step Solution

1. Step 1: Write the proportion equation
   824,418 : 1,311,390 = 1,311,390 : x
2. Step 2: Convert to fraction form
   824,418/1,311,390 = 1,311,390/x
3. Step 3: Cross multiply
   824,418x = 1,311,390 × 1,311,390
4. Step 4: Simplify right side
   824,418x = 1,719,743,732,100
5. Step 5: Solve for x
   x = 1,719,743,732,100/824,418
6. Step 6: Final answer
   x = 2,086,009.44