Finding the Third Proportional to 8,078,856 and 17,677,921

Step by Step Solution

1. Step 1: Write the proportion equation
   8,078,856 : 17,677,921 = 17,677,921 : x
2. Step 2: Convert to fraction form
   8,078,856/17,677,921 = 17,677,921/x
3. Step 3: Cross multiply
   8,078,856x = 17,677,921 × 17,677,921
4. Step 4: Simplify right side
   8,078,856x = 312,508,890,882,241
5. Step 5: Solve for x
   x = 312,508,890,882,241/8,078,856
6. Step 6: Final answer
   x = 38,682,319.73