Finding the Third Proportional to 21,018,601.50 and 31,678,241.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,018,601.50 : 31,678,241.25 = 31,678,241.25 : x
2. Step 2: Convert to fraction form
   21,018,601.50/31,678,241.25 = 31,678,241.25/x
3. Step 3: Cross multiply
   21,018,601.50x = 31,678,241.25 × 31,678,241.25
4. Step 4: Simplify right side
   21,018,601.50x = 1,003,510,968,693,201.50
5. Step 5: Solve for x
   x = 1,003,510,968,693,201.50/21,018,601.50
6. Step 6: Final answer
   x = 47,743,945.70