Finding the Third Proportional to 53,266.50 and 80,871.75

Step by Step Solution

1. Step 1: Write the proportion equation
   53,266.50 : 80,871.75 = 80,871.75 : x
2. Step 2: Convert to fraction form
   53,266.50/80,871.75 = 80,871.75/x
3. Step 3: Cross multiply
   53,266.50x = 80,871.75 × 80,871.75
4. Step 4: Simplify right side
   53,266.50x = 6,540,239,948.06
5. Step 5: Solve for x
   x = 6,540,239,948.06/53,266.50
6. Step 6: Final answer
   x = 122,783.36