Finding the Third Proportional to 2,405,276 and 5,186,512

Step by Step Solution

1. Step 1: Write the proportion equation
   2,405,276 : 5,186,512 = 5,186,512 : x
2. Step 2: Convert to fraction form
   2,405,276/5,186,512 = 5,186,512/x
3. Step 3: Cross multiply
   2,405,276x = 5,186,512 × 5,186,512
4. Step 4: Simplify right side
   2,405,276x = 26,899,906,726,144
5. Step 5: Solve for x
   x = 26,899,906,726,144/2,405,276
6. Step 6: Final answer
   x = 11,183,708.95