Finding the Third Proportional to 5,470,920 and 12,665,260

Step by Step Solution

1. Step 1: Write the proportion equation
   5,470,920 : 12,665,260 = 12,665,260 : x
2. Step 2: Convert to fraction form
   5,470,920/12,665,260 = 12,665,260/x
3. Step 3: Cross multiply
   5,470,920x = 12,665,260 × 12,665,260
4. Step 4: Simplify right side
   5,470,920x = 160,408,810,867,600
5. Step 5: Solve for x
   x = 160,408,810,867,600/5,470,920
6. Step 6: Final answer
   x = 29,320,262.56