Finding the Third Proportional to 2,615,450 and 5,631,670

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615,450 : 5,631,670 = 5,631,670 : x
2. Step 2: Convert to fraction form
   2,615,450/5,631,670 = 5,631,670/x
3. Step 3: Cross multiply
   2,615,450x = 5,631,670 × 5,631,670
4. Step 4: Simplify right side
   2,615,450x = 31,715,706,988,900
5. Step 5: Solve for x
   x = 31,715,706,988,900/2,615,450
6. Step 6: Final answer
   x = 12,126,290.69