Finding the Third Proportional to 7,979,018 and 12,636,518

Step by Step Solution

1. Step 1: Write the proportion equation
   7,979,018 : 12,636,518 = 12,636,518 : x
2. Step 2: Convert to fraction form
   7,979,018/12,636,518 = 12,636,518/x
3. Step 3: Cross multiply
   7,979,018x = 12,636,518 × 12,636,518
4. Step 4: Simplify right side
   7,979,018x = 159,681,587,164,324
5. Step 5: Solve for x
   x = 159,681,587,164,324/7,979,018
6. Step 6: Final answer
   x = 20,012,686.67