Finding the Third Proportional to 644,814 and 1,516,698

Step by Step Solution

1. Step 1: Write the proportion equation
   644,814 : 1,516,698 = 1,516,698 : x
2. Step 2: Convert to fraction form
   644,814/1,516,698 = 1,516,698/x
3. Step 3: Cross multiply
   644,814x = 1,516,698 × 1,516,698
4. Step 4: Simplify right side
   644,814x = 2,300,372,823,204
5. Step 5: Solve for x
   x = 2,300,372,823,204/644,814
6. Step 6: Final answer
   x = 3,567,498.26