Finding the Third Proportional to 1,366,806 and 2,172,276

Step by Step Solution

1. Step 1: Write the proportion equation
   1,366,806 : 2,172,276 = 2,172,276 : x
2. Step 2: Convert to fraction form
   1,366,806/2,172,276 = 2,172,276/x
3. Step 3: Cross multiply
   1,366,806x = 2,172,276 × 2,172,276
4. Step 4: Simplify right side
   1,366,806x = 4,718,783,020,176
5. Step 5: Solve for x
   x = 4,718,783,020,176/1,366,806
6. Step 6: Final answer
   x = 3,452,416.09