Finding the Third Proportional to 52,558.88 and 81,420.19

Step by Step Solution

1. Step 1: Write the proportion equation
   52,558.88 : 81,420.19 = 81,420.19 : x
2. Step 2: Convert to fraction form
   52,558.88/81,420.19 = 81,420.19/x
3. Step 3: Cross multiply
   52,558.88x = 81,420.19 × 81,420.19
4. Step 4: Simplify right side
   52,558.88x = 6,629,246,932.54
5. Step 5: Solve for x
   x = 6,629,246,932.54/52,558.88
6. Step 6: Final answer
   x = 126,129.92