Finding the Third Proportional to 33,915 and 51,661.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,915 : 51,661.50 = 51,661.50 : x
2. Step 2: Convert to fraction form
   33,915/51,661.50 = 51,661.50/x
3. Step 3: Cross multiply
   33,915x = 51,661.50 × 51,661.50
4. Step 4: Simplify right side
   33,915x = 2,668,910,582.25
5. Step 5: Solve for x
   x = 2,668,910,582.25/33,915
6. Step 6: Final answer
   x = 78,694.11