Finding the Third Proportional to 356,778 and 748,587.38

Step by Step Solution

1. Step 1: Write the proportion equation
   356,778 : 748,587.38 = 748,587.38 : x
2. Step 2: Convert to fraction form
   356,778/748,587.38 = 748,587.38/x
3. Step 3: Cross multiply
   356,778x = 748,587.38 × 748,587.38
4. Step 4: Simplify right side
   356,778x = 560,383,058,009.39
5. Step 5: Solve for x
   x = 560,383,058,009.39/356,778
6. Step 6: Final answer
   x = 1,570,677.17