Finding the Third Proportional to 1,226,112 and 1,821,666

Step by Step Solution

1. Step 1: Write the proportion equation
   1,226,112 : 1,821,666 = 1,821,666 : x
2. Step 2: Convert to fraction form
   1,226,112/1,821,666 = 1,821,666/x
3. Step 3: Cross multiply
   1,226,112x = 1,821,666 × 1,821,666
4. Step 4: Simplify right side
   1,226,112x = 3,318,467,015,556
5. Step 5: Solve for x
   x = 3,318,467,015,556/1,226,112
6. Step 6: Final answer
   x = 2,706,495.83