Finding the Third Proportional to 56,540.81 and 76,788

Step by Step Solution

1. Step 1: Write the proportion equation
   56,540.81 : 76,788 = 76,788 : x
2. Step 2: Convert to fraction form
   56,540.81/76,788 = 76,788/x
3. Step 3: Cross multiply
   56,540.81x = 76,788 × 76,788
4. Step 4: Simplify right side
   56,540.81x = 5,896,396,944
5. Step 5: Solve for x
   x = 5,896,396,944/56,540.81
6. Step 6: Final answer
   x = 104,285.68