Finding the Third Proportional to 5,470,648 and 12,663,560

Step by Step Solution

1. Step 1: Write the proportion equation
   5,470,648 : 12,663,560 = 12,663,560 : x
2. Step 2: Convert to fraction form
   5,470,648/12,663,560 = 12,663,560/x
3. Step 3: Cross multiply
   5,470,648x = 12,663,560 × 12,663,560
4. Step 4: Simplify right side
   5,470,648x = 160,365,751,873,600
5. Step 5: Solve for x
   x = 160,365,751,873,600/5,470,648
6. Step 6: Final answer
   x = 29,313,849.45