Finding the Third Proportional to 5,414,954 and 8,123,511

Step by Step Solution

1. Step 1: Write the proportion equation
   5,414,954 : 8,123,511 = 8,123,511 : x
2. Step 2: Convert to fraction form
   5,414,954/8,123,511 = 8,123,511/x
3. Step 3: Cross multiply
   5,414,954x = 8,123,511 × 8,123,511
4. Step 4: Simplify right side
   5,414,954x = 65,991,430,967,121
5. Step 5: Solve for x
   x = 65,991,430,967,121/5,414,954
6. Step 6: Final answer
   x = 12,186,886.72