Finding the Third Proportional to 54,003.50 and 81,748.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,003.50 : 81,748.50 = 81,748.50 : x
2. Step 2: Convert to fraction form
   54,003.50/81,748.50 = 81,748.50/x
3. Step 3: Cross multiply
   54,003.50x = 81,748.50 × 81,748.50
4. Step 4: Simplify right side
   54,003.50x = 6,682,817,252.25
5. Step 5: Solve for x
   x = 6,682,817,252.25/54,003.50
6. Step 6: Final answer
   x = 123,747.85