Finding the Third Proportional to 7,981,673 and 12,171,788

Step by Step Solution

1. Step 1: Write the proportion equation
   7,981,673 : 12,171,788 = 12,171,788 : x
2. Step 2: Convert to fraction form
   7,981,673/12,171,788 = 12,171,788/x
3. Step 3: Cross multiply
   7,981,673x = 12,171,788 × 12,171,788
4. Step 4: Simplify right side
   7,981,673x = 148,152,423,116,944
5. Step 5: Solve for x
   x = 148,152,423,116,944/7,981,673
6. Step 6: Final answer
   x = 18,561,575.14