Finding the Third Proportional to 54,501.75 and 81,806.63

Step by Step Solution

1. Step 1: Write the proportion equation
   54,501.75 : 81,806.63 = 81,806.63 : x
2. Step 2: Convert to fraction form
   54,501.75/81,806.63 = 81,806.63/x
3. Step 3: Cross multiply
   54,501.75x = 81,806.63 × 81,806.63
4. Step 4: Simplify right side
   54,501.75x = 6,692,323,893.89
5. Step 5: Solve for x
   x = 6,692,323,893.89/54,501.75
6. Step 6: Final answer
   x = 122,790.99