Finding the Third Proportional to 50,998.78 and 71,691.33

Step by Step Solution

1. Step 1: Write the proportion equation
   50,998.78 : 71,691.33 = 71,691.33 : x
2. Step 2: Convert to fraction form
   50,998.78/71,691.33 = 71,691.33/x
3. Step 3: Cross multiply
   50,998.78x = 71,691.33 × 71,691.33
4. Step 4: Simplify right side
   50,998.78x = 5,139,646,528.33
5. Step 5: Solve for x
   x = 5,139,646,528.33/50,998.78
6. Step 6: Final answer
   x = 100,779.79