Finding the Third Proportional to 1,392,192 and 2,215,269

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,192 : 2,215,269 = 2,215,269 : x
2. Step 2: Convert to fraction form
   1,392,192/2,215,269 = 2,215,269/x
3. Step 3: Cross multiply
   1,392,192x = 2,215,269 × 2,215,269
4. Step 4: Simplify right side
   1,392,192x = 4,907,416,742,361
5. Step 5: Solve for x
   x = 4,907,416,742,361/1,392,192
6. Step 6: Final answer
   x = 3,524,956.86