Finding the Third Proportional to 1,438,553 and 2,147,979

Step by Step Solution

1. Step 1: Write the proportion equation
   1,438,553 : 2,147,979 = 2,147,979 : x
2. Step 2: Convert to fraction form
   1,438,553/2,147,979 = 2,147,979/x
3. Step 3: Cross multiply
   1,438,553x = 2,147,979 × 2,147,979
4. Step 4: Simplify right side
   1,438,553x = 4,613,813,784,441
5. Step 5: Solve for x
   x = 4,613,813,784,441/1,438,553
6. Step 6: Final answer
   x = 3,207,260.20