Finding the Third Proportional to 39,867 and 54,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   39,867 : 54,166.50 = 54,166.50 : x
2. Step 2: Convert to fraction form
   39,867/54,166.50 = 54,166.50/x
3. Step 3: Cross multiply
   39,867x = 54,166.50 × 54,166.50
4. Step 4: Simplify right side
   39,867x = 2,934,009,722.25
5. Step 5: Solve for x
   x = 2,934,009,722.25/39,867
6. Step 6: Final answer
   x = 73,594.95