Finding the Third Proportional to 5,561,689 and 8,607,156

Step by Step Solution

1. Step 1: Write the proportion equation
   5,561,689 : 8,607,156 = 8,607,156 : x
2. Step 2: Convert to fraction form
   5,561,689/8,607,156 = 8,607,156/x
3. Step 3: Cross multiply
   5,561,689x = 8,607,156 × 8,607,156
4. Step 4: Simplify right side
   5,561,689x = 74,083,134,408,336
5. Step 5: Solve for x
   x = 74,083,134,408,336/5,561,689
6. Step 6: Final answer
   x = 13,320,258.36