Finding the Third Proportional to 5,606,939 and 8,521,217

Step by Step Solution

1. Step 1: Write the proportion equation
   5,606,939 : 8,521,217 = 8,521,217 : x
2. Step 2: Convert to fraction form
   5,606,939/8,521,217 = 8,521,217/x
3. Step 3: Cross multiply
   5,606,939x = 8,521,217 × 8,521,217
4. Step 4: Simplify right side
   5,606,939x = 72,611,139,161,089
5. Step 5: Solve for x
   x = 72,611,139,161,089/5,606,939
6. Step 6: Final answer
   x = 12,950,228.13