Finding the Third Proportional to 19,778 and 43,040

Step by Step Solution

1. Step 1: Write the proportion equation
   19,778 : 43,040 = 43,040 : x
2. Step 2: Convert to fraction form
   19,778/43,040 = 43,040/x
3. Step 3: Cross multiply
   19,778x = 43,040 × 43,040
4. Step 4: Simplify right side
   19,778x = 1,852,441,600
5. Step 5: Solve for x
   x = 1,852,441,600/19,778
6. Step 6: Final answer
   x = 93,661.73