Finding the Third Proportional to 26,887 and 42,707.50

Step by Step Solution

1. Step 1: Write the proportion equation
   26,887 : 42,707.50 = 42,707.50 : x
2. Step 2: Convert to fraction form
   26,887/42,707.50 = 42,707.50/x
3. Step 3: Cross multiply
   26,887x = 42,707.50 × 42,707.50
4. Step 4: Simplify right side
   26,887x = 1,823,930,556.25
5. Step 5: Solve for x
   x = 1,823,930,556.25/26,887
6. Step 6: Final answer
   x = 67,836.89