Finding the Third Proportional to 31,819.78 and 62,836.73

Step by Step Solution

1. Step 1: Write the proportion equation
   31,819.78 : 62,836.73 = 62,836.73 : x
2. Step 2: Convert to fraction form
   31,819.78/62,836.73 = 62,836.73/x
3. Step 3: Cross multiply
   31,819.78x = 62,836.73 × 62,836.73
4. Step 4: Simplify right side
   31,819.78x = 3,948,455,186.91
5. Step 5: Solve for x
   x = 3,948,455,186.91/31,819.78
6. Step 6: Final answer
   x = 124,088.07