Finding the Third Proportional to 1,360,900 and 3,178,666

Step by Step Solution

1. Step 1: Write the proportion equation
   1,360,900 : 3,178,666 = 3,178,666 : x
2. Step 2: Convert to fraction form
   1,360,900/3,178,666 = 3,178,666/x
3. Step 3: Cross multiply
   1,360,900x = 3,178,666 × 3,178,666
4. Step 4: Simplify right side
   1,360,900x = 10,103,917,539,556
5. Step 5: Solve for x
   x = 10,103,917,539,556/1,360,900
6. Step 6: Final answer
   x = 7,424,437.90