Finding the Third Proportional to 5,671,609 and 8,717,662

Step by Step Solution

1. Step 1: Write the proportion equation
   5,671,609 : 8,717,662 = 8,717,662 : x
2. Step 2: Convert to fraction form
   5,671,609/8,717,662 = 8,717,662/x
3. Step 3: Cross multiply
   5,671,609x = 8,717,662 × 8,717,662
4. Step 4: Simplify right side
   5,671,609x = 75,997,630,746,244
5. Step 5: Solve for x
   x = 75,997,630,746,244/5,671,609
6. Step 6: Final answer
   x = 13,399,659.73