Finding the Third Proportional to 644,648 and 1,366,134

Step by Step Solution

1. Step 1: Write the proportion equation
   644,648 : 1,366,134 = 1,366,134 : x
2. Step 2: Convert to fraction form
   644,648/1,366,134 = 1,366,134/x
3. Step 3: Cross multiply
   644,648x = 1,366,134 × 1,366,134
4. Step 4: Simplify right side
   644,648x = 1,866,322,105,956
5. Step 5: Solve for x
   x = 1,866,322,105,956/644,648
6. Step 6: Final answer
   x = 2,895,102.61