Finding the Third Proportional to 8,402,156 and 17,999,872

Step by Step Solution

1. Step 1: Write the proportion equation
   8,402,156 : 17,999,872 = 17,999,872 : x
2. Step 2: Convert to fraction form
   8,402,156/17,999,872 = 17,999,872/x
3. Step 3: Cross multiply
   8,402,156x = 17,999,872 × 17,999,872
4. Step 4: Simplify right side
   8,402,156x = 323,995,392,016,384
5. Step 5: Solve for x
   x = 323,995,392,016,384/8,402,156
6. Step 6: Final answer
   x = 38,560,982.68