Finding the Third Proportional to 821,556 and 1,098,900

Step by Step Solution

1. Step 1: Write the proportion equation
   821,556 : 1,098,900 = 1,098,900 : x
2. Step 2: Convert to fraction form
   821,556/1,098,900 = 1,098,900/x
3. Step 3: Cross multiply
   821,556x = 1,098,900 × 1,098,900
4. Step 4: Simplify right side
   821,556x = 1,207,581,210,000
5. Step 5: Solve for x
   x = 1,207,581,210,000/821,556
6. Step 6: Final answer
   x = 1,469,870.84