Finding the Third Proportional to 5,671,911 and 8,718,099

Step by Step Solution

1. Step 1: Write the proportion equation
   5,671,911 : 8,718,099 = 8,718,099 : x
2. Step 2: Convert to fraction form
   5,671,911/8,718,099 = 8,718,099/x
3. Step 3: Cross multiply
   5,671,911x = 8,718,099 × 8,718,099
4. Step 4: Simplify right side
   5,671,911x = 76,005,250,173,801
5. Step 5: Solve for x
   x = 76,005,250,173,801/5,671,911
6. Step 6: Final answer
   x = 13,400,289.63