Finding the Third Proportional to 5,606,942 and 8,521,221

Step by Step Solution

1. Step 1: Write the proportion equation
   5,606,942 : 8,521,221 = 8,521,221 : x
2. Step 2: Convert to fraction form
   5,606,942/8,521,221 = 8,521,221/x
3. Step 3: Cross multiply
   5,606,942x = 8,521,221 × 8,521,221
4. Step 4: Simplify right side
   5,606,942x = 72,611,207,330,841
5. Step 5: Solve for x
   x = 72,611,207,330,841/5,606,942
6. Step 6: Final answer
   x = 12,950,233.36