Finding the Third Proportional to 1,392,194 and 2,215,272

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,194 : 2,215,272 = 2,215,272 : x
2. Step 2: Convert to fraction form
   1,392,194/2,215,272 = 2,215,272/x
3. Step 3: Cross multiply
   1,392,194x = 2,215,272 × 2,215,272
4. Step 4: Simplify right side
   1,392,194x = 4,907,430,033,984
5. Step 5: Solve for x
   x = 4,907,430,033,984/1,392,194
6. Step 6: Final answer
   x = 3,524,961.34