Finding the Third Proportional to 5,514,868 and 8,278,134

Step by Step Solution

1. Step 1: Write the proportion equation
   5,514,868 : 8,278,134 = 8,278,134 : x
2. Step 2: Convert to fraction form
   5,514,868/8,278,134 = 8,278,134/x
3. Step 3: Cross multiply
   5,514,868x = 8,278,134 × 8,278,134
4. Step 4: Simplify right side
   5,514,868x = 68,527,502,521,956
5. Step 5: Solve for x
   x = 68,527,502,521,956/5,514,868
6. Step 6: Final answer
   x = 12,425,955.17