Finding the Third Proportional to 21,622,390 and 29,123,913

Step by Step Solution

1. Step 1: Write the proportion equation
   21,622,390 : 29,123,913 = 29,123,913 : x
2. Step 2: Convert to fraction form
   21,622,390/29,123,913 = 29,123,913/x
3. Step 3: Cross multiply
   21,622,390x = 29,123,913 × 29,123,913
4. Step 4: Simplify right side
   21,622,390x = 848,202,308,431,569
5. Step 5: Solve for x
   x = 848,202,308,431,569/21,622,390
6. Step 6: Final answer
   x = 39,227,962.70