Finding the Third Proportional to 54,035.50 and 86,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   54,035.50 : 86,819.50 = 86,819.50 : x
2. Step 2: Convert to fraction form
   54,035.50/86,819.50 = 86,819.50/x
3. Step 3: Cross multiply
   54,035.50x = 86,819.50 × 86,819.50
4. Step 4: Simplify right side
   54,035.50x = 7,537,625,580.25
5. Step 5: Solve for x
   x = 7,537,625,580.25/54,035.50
6. Step 6: Final answer
   x = 139,493.95