Finding the Third Proportional to 54,581.63 and 86,793.38

Step by Step Solution

1. Step 1: Write the proportion equation
   54,581.63 : 86,793.38 = 86,793.38 : x
2. Step 2: Convert to fraction form
   54,581.63/86,793.38 = 86,793.38/x
3. Step 3: Cross multiply
   54,581.63x = 86,793.38 × 86,793.38
4. Step 4: Simplify right side
   54,581.63x = 7,533,089,943.89
5. Step 5: Solve for x
   x = 7,533,089,943.89/54,581.63
6. Step 6: Final answer
   x = 138,015.13