Finding the Third Proportional to 5,615,636 and 8,212,852

Step by Step Solution

1. Step 1: Write the proportion equation
   5,615,636 : 8,212,852 = 8,212,852 : x
2. Step 2: Convert to fraction form
   5,615,636/8,212,852 = 8,212,852/x
3. Step 3: Cross multiply
   5,615,636x = 8,212,852 × 8,212,852
4. Step 4: Simplify right side
   5,615,636x = 67,450,937,973,904
5. Step 5: Solve for x
   x = 67,450,937,973,904/5,615,636
6. Step 6: Final answer
   x = 12,011,273.16