Finding the Third Proportional to 4,271,986 and 8,702,599

Step by Step Solution

1. Step 1: Write the proportion equation
   4,271,986 : 8,702,599 = 8,702,599 : x
2. Step 2: Convert to fraction form
   4,271,986/8,702,599 = 8,702,599/x
3. Step 3: Cross multiply
   4,271,986x = 8,702,599 × 8,702,599
4. Step 4: Simplify right side
   4,271,986x = 75,735,229,354,801
5. Step 5: Solve for x
   x = 75,735,229,354,801/4,271,986
6. Step 6: Final answer
   x = 17,728,342.12