Finding the Third Proportional to 8,619,584 and 12,854,637

Step by Step Solution

1. Step 1: Write the proportion equation
   8,619,584 : 12,854,637 = 12,854,637 : x
2. Step 2: Convert to fraction form
   8,619,584/12,854,637 = 12,854,637/x
3. Step 3: Cross multiply
   8,619,584x = 12,854,637 × 12,854,637
4. Step 4: Simplify right side
   8,619,584x = 165,241,692,401,769
5. Step 5: Solve for x
   x = 165,241,692,401,769/8,619,584
6. Step 6: Final answer
   x = 19,170,495.05