Finding the Third Proportional to 30,781.69 and 63,694.69

Step by Step Solution

1. Step 1: Write the proportion equation
   30,781.69 : 63,694.69 = 63,694.69 : x
2. Step 2: Convert to fraction form
   30,781.69/63,694.69 = 63,694.69/x
3. Step 3: Cross multiply
   30,781.69x = 63,694.69 × 63,694.69
4. Step 4: Simplify right side
   30,781.69x = 4,057,013,215.72
5. Step 5: Solve for x
   x = 4,057,013,215.72/30,781.69
6. Step 6: Final answer
   x = 131,799.57