Finding the Third Proportional to 1,392,166 and 2,215,233

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,166 : 2,215,233 = 2,215,233 : x
2. Step 2: Convert to fraction form
   1,392,166/2,215,233 = 2,215,233/x
3. Step 3: Cross multiply
   1,392,166x = 2,215,233 × 2,215,233
4. Step 4: Simplify right side
   1,392,166x = 4,907,257,244,289
5. Step 5: Solve for x
   x = 4,907,257,244,289/1,392,166
6. Step 6: Final answer
   x = 3,524,908.12