Finding the Third Proportional to 2,647,581 and 5,780,670

Step by Step Solution

1. Step 1: Write the proportion equation
   2,647,581 : 5,780,670 = 5,780,670 : x
2. Step 2: Convert to fraction form
   2,647,581/5,780,670 = 5,780,670/x
3. Step 3: Cross multiply
   2,647,581x = 5,780,670 × 5,780,670
4. Step 4: Simplify right side
   2,647,581x = 33,416,145,648,900
5. Step 5: Solve for x
   x = 33,416,145,648,900/2,647,581
6. Step 6: Final answer
   x = 12,621,387.47