Finding the Third Proportional to 10,913,847 and 18,188,648

Step by Step Solution

1. Step 1: Write the proportion equation
   10,913,847 : 18,188,648 = 18,188,648 : x
2. Step 2: Convert to fraction form
   10,913,847/18,188,648 = 18,188,648/x
3. Step 3: Cross multiply
   10,913,847x = 18,188,648 × 18,188,648
4. Step 4: Simplify right side
   10,913,847x = 330,826,916,067,904
5. Step 5: Solve for x
   x = 330,826,916,067,904/10,913,847
6. Step 6: Final answer
   x = 30,312,585.11