Finding the Third Proportional to 54,508.50 and 81,767.25

Step by Step Solution

1. Step 1: Write the proportion equation
   54,508.50 : 81,767.25 = 81,767.25 : x
2. Step 2: Convert to fraction form
   54,508.50/81,767.25 = 81,767.25/x
3. Step 3: Cross multiply
   54,508.50x = 81,767.25 × 81,767.25
4. Step 4: Simplify right side
   54,508.50x = 6,685,883,172.56
5. Step 5: Solve for x
   x = 6,685,883,172.56/54,508.50
6. Step 6: Final answer
   x = 122,657.63