Finding the Third Proportional to 644,587 and 1,366,012

Step by Step Solution

1. Step 1: Write the proportion equation
   644,587 : 1,366,012 = 1,366,012 : x
2. Step 2: Convert to fraction form
   644,587/1,366,012 = 1,366,012/x
3. Step 3: Cross multiply
   644,587x = 1,366,012 × 1,366,012
4. Step 4: Simplify right side
   644,587x = 1,865,988,784,144
5. Step 5: Solve for x
   x = 1,865,988,784,144/644,587
6. Step 6: Final answer
   x = 2,894,859.47