Finding the Third Proportional to 820,315 and 1,283,902

Step by Step Solution

1. Step 1: Write the proportion equation
   820,315 : 1,283,902 = 1,283,902 : x
2. Step 2: Convert to fraction form
   820,315/1,283,902 = 1,283,902/x
3. Step 3: Cross multiply
   820,315x = 1,283,902 × 1,283,902
4. Step 4: Simplify right side
   820,315x = 1,648,404,345,604
5. Step 5: Solve for x
   x = 1,648,404,345,604/820,315
6. Step 6: Final answer
   x = 2,009,477.27