Finding the Third Proportional to 1,438,538 and 2,147,961

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438,538 : 2,147,961 = 2,147,961 : x
2. Step 2: Convert to fraction form
   1,438,538/2,147,961 = 2,147,961/x
3. Step 3: Cross multiply
   1,438,538x = 2,147,961 × 2,147,961
4. Step 4: Simplify right side
   1,438,538x = 4,613,736,457,521
5. Step 5: Solve for x
   x = 4,613,736,457,521/1,438,538
6. Step 6: Final answer
   x = 3,207,239.89