Finding the Third Proportional to 19,802,673 and 31,509,945

Step by Step Solution

1. Step 1: Write the proportion equation
   19,802,673 : 31,509,945 = 31,509,945 : x
2. Step 2: Convert to fraction form
   19,802,673/31,509,945 = 31,509,945/x
3. Step 3: Cross multiply
   19,802,673x = 31,509,945 × 31,509,945
4. Step 4: Simplify right side
   19,802,673x = 992,876,633,903,025
5. Step 5: Solve for x
   x = 992,876,633,903,025/19,802,673
6. Step 6: Final answer
   x = 50,138,515.84