Finding the Third Proportional to 8,408,636 and 12,985,590

Step by Step Solution

1. Step 1: Write the proportion equation
   8,408,636 : 12,985,590 = 12,985,590 : x
2. Step 2: Convert to fraction form
   8,408,636/12,985,590 = 12,985,590/x
3. Step 3: Cross multiply
   8,408,636x = 12,985,590 × 12,985,590
4. Step 4: Simplify right side
   8,408,636x = 168,625,547,648,100
5. Step 5: Solve for x
   x = 168,625,547,648,100/8,408,636
6. Step 6: Final answer
   x = 20,053,852.69