Finding the Third Proportional to 19,802,687 and 31,509,969

Step by Step Solution

1. Step 1: Write the proportion equation
   19,802,687 : 31,509,969 = 31,509,969 : x
2. Step 2: Convert to fraction form
   19,802,687/31,509,969 = 31,509,969/x
3. Step 3: Cross multiply
   19,802,687x = 31,509,969 × 31,509,969
4. Step 4: Simplify right side
   19,802,687x = 992,878,146,380,961
5. Step 5: Solve for x
   x = 992,878,146,380,961/19,802,687
6. Step 6: Final answer
   x = 50,138,556.77