Finding the Third Proportional to 20,442,620 and 41,485,936

Step by Step Solution

1. Step 1: Write the proportion equation
   20,442,620 : 41,485,936 = 41,485,936 : x
2. Step 2: Convert to fraction form
   20,442,620/41,485,936 = 41,485,936/x
3. Step 3: Cross multiply
   20,442,620x = 41,485,936 × 41,485,936
4. Step 4: Simplify right side
   20,442,620x = 1,721,082,885,796,096
5. Step 5: Solve for x
   x = 1,721,082,885,796,096/20,442,620
6. Step 6: Final answer
   x = 84,190,915.15