Finding the Third Proportional to 5,514,870 and 8,278,137

Step by Step Solution

1. Step 1: Write the proportion equation
   5,514,870 : 8,278,137 = 8,278,137 : x
2. Step 2: Convert to fraction form
   5,514,870/8,278,137 = 8,278,137/x
3. Step 3: Cross multiply
   5,514,870x = 8,278,137 × 8,278,137
4. Step 4: Simplify right side
   5,514,870x = 68,527,552,190,769
5. Step 5: Solve for x
   x = 68,527,552,190,769/5,514,870
6. Step 6: Final answer
   x = 12,425,959.67