Finding the Third Proportional to 644,820 and 1,516,713

Step by Step Solution

1. Step 1: Write the proportion equation
   644,820 : 1,516,713 = 1,516,713 : x
2. Step 2: Convert to fraction form
   644,820/1,516,713 = 1,516,713/x
3. Step 3: Cross multiply
   644,820x = 1,516,713 × 1,516,713
4. Step 4: Simplify right side
   644,820x = 2,300,418,324,369
5. Step 5: Solve for x
   x = 2,300,418,324,369/644,820
6. Step 6: Final answer
   x = 3,567,535.63