Finding the Third Proportional to 1,366,838 and 2,172,322

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366,838 : 2,172,322 = 2,172,322 : x
2. Step 2: Convert to fraction form
   1,366,838/2,172,322 = 2,172,322/x
3. Step 3: Cross multiply
   1,366,838x = 2,172,322 × 2,172,322
4. Step 4: Simplify right side
   1,366,838x = 4,718,982,871,684
5. Step 5: Solve for x
   x = 4,718,982,871,684/1,366,838
6. Step 6: Final answer
   x = 3,452,481.47