Finding the Third Proportional to 665,930 and 1,438,266

Step by Step Solution

1. Step 1: Write the proportion equation
   665,930 : 1,438,266 = 1,438,266 : x
2. Step 2: Convert to fraction form
   665,930/1,438,266 = 1,438,266/x
3. Step 3: Cross multiply
   665,930x = 1,438,266 × 1,438,266
4. Step 4: Simplify right side
   665,930x = 2,068,609,086,756
5. Step 5: Solve for x
   x = 2,068,609,086,756/665,930
6. Step 6: Final answer
   x = 3,106,346.14