Finding the Third Proportional to 3,973,780 and 8,582,744

Step by Step Solution

1. Step 1: Write the proportion equation
   3,973,780 : 8,582,744 = 8,582,744 : x
2. Step 2: Convert to fraction form
   3,973,780/8,582,744 = 8,582,744/x
3. Step 3: Cross multiply
   3,973,780x = 8,582,744 × 8,582,744
4. Step 4: Simplify right side
   3,973,780x = 73,663,494,569,536
5. Step 5: Solve for x
   x = 73,663,494,569,536/3,973,780
6. Step 6: Final answer
   x = 18,537,386.21