Finding the Third Proportional to 356,581 and 743,042

Step by Step Solution

1. Step 1: Write the proportion equation
   356,581 : 743,042 = 743,042 : x
2. Step 2: Convert to fraction form
   356,581/743,042 = 743,042/x
3. Step 3: Cross multiply
   356,581x = 743,042 × 743,042
4. Step 4: Simplify right side
   356,581x = 552,111,413,764
5. Step 5: Solve for x
   x = 552,111,413,764/356,581
6. Step 6: Final answer
   x = 1,548,347.82