Finding the Third Proportional to 52,857.56 and 81,808.31

Step by Step Solution

1. Step 1: Write the proportion equation
   52,857.56 : 81,808.31 = 81,808.31 : x
2. Step 2: Convert to fraction form
   52,857.56/81,808.31 = 81,808.31/x
3. Step 3: Cross multiply
   52,857.56x = 81,808.31 × 81,808.31
4. Step 4: Simplify right side
   52,857.56x = 6,692,599,994.10
5. Step 5: Solve for x
   x = 6,692,599,994.10/52,857.56
6. Step 6: Final answer
   x = 126,615.75