Finding the Third Proportional to 2,145,258 and 4,236,372

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145,258 : 4,236,372 = 4,236,372 : x
2. Step 2: Convert to fraction form
   2,145,258/4,236,372 = 4,236,372/x
3. Step 3: Cross multiply
   2,145,258x = 4,236,372 × 4,236,372
4. Step 4: Simplify right side
   2,145,258x = 17,946,847,722,384
5. Step 5: Solve for x
   x = 17,946,847,722,384/2,145,258
6. Step 6: Final answer
   x = 8,365,822.54