Finding the Third Proportional to 54,613 and 86,837.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,613 : 86,837.50 = 86,837.50 : x
2. Step 2: Convert to fraction form
   54,613/86,837.50 = 86,837.50/x
3. Step 3: Cross multiply
   54,613x = 86,837.50 × 86,837.50
4. Step 4: Simplify right side
   54,613x = 7,540,751,406.25
5. Step 5: Solve for x
   x = 7,540,751,406.25/54,613
6. Step 6: Final answer
   x = 138,076.12