Finding the Third Proportional to 647,164 and 1,418,744

Step by Step Solution

1. Step 1: Write the proportion equation
   647,164 : 1,418,744 = 1,418,744 : x
2. Step 2: Convert to fraction form
   647,164/1,418,744 = 1,418,744/x
3. Step 3: Cross multiply
   647,164x = 1,418,744 × 1,418,744
4. Step 4: Simplify right side
   647,164x = 2,012,834,537,536
5. Step 5: Solve for x
   x = 2,012,834,537,536/647,164
6. Step 6: Final answer
   x = 3,110,238.73