Finding the Third Proportional to 550,499 and 850,799

Step by Step Solution

1. Step 1: Write the proportion equation
   550,499 : 850,799 = 850,799 : x
2. Step 2: Convert to fraction form
   550,499/850,799 = 850,799/x
3. Step 3: Cross multiply
   550,499x = 850,799 × 850,799
4. Step 4: Simplify right side
   550,499x = 723,858,938,401
5. Step 5: Solve for x
   x = 723,858,938,401/550,499
6. Step 6: Final answer
   x = 1,314,914.17