Finding the Third Proportional to 8,593,859 and 12,428,238

Step by Step Solution

1. Step 1: Write the proportion equation
   8,593,859 : 12,428,238 = 12,428,238 : x
2. Step 2: Convert to fraction form
   8,593,859/12,428,238 = 12,428,238/x
3. Step 3: Cross multiply
   8,593,859x = 12,428,238 × 12,428,238
4. Step 4: Simplify right side
   8,593,859x = 154,461,099,784,644
5. Step 5: Solve for x
   x = 154,461,099,784,644/8,593,859
6. Step 6: Final answer
   x = 17,973,427.28