Finding the Third Proportional to 12,972,723 and 19,898,874

Step by Step Solution

1. Step 1: Write the proportion equation
   12,972,723 : 19,898,874 = 19,898,874 : x
2. Step 2: Convert to fraction form
   12,972,723/19,898,874 = 19,898,874/x
3. Step 3: Cross multiply
   12,972,723x = 19,898,874 × 19,898,874
4. Step 4: Simplify right side
   12,972,723x = 395,965,186,467,876
5. Step 5: Solve for x
   x = 395,965,186,467,876/12,972,723
6. Step 6: Final answer
   x = 30,522,904.60