Finding the Third Proportional to 7,979,020 and 12,636,521

Step by Step Solution

1. Step 1: Write the proportion equation
   7,979,020 : 12,636,521 = 12,636,521 : x
2. Step 2: Convert to fraction form
   7,979,020/12,636,521 = 12,636,521/x
3. Step 3: Cross multiply
   7,979,020x = 12,636,521 × 12,636,521
4. Step 4: Simplify right side
   7,979,020x = 159,681,662,983,441
5. Step 5: Solve for x
   x = 159,681,662,983,441/7,979,020
6. Step 6: Final answer
   x = 20,012,691.16