Finding the Third Proportional to 16,856.86 and 36,629.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,856.86 : 36,629.72 = 36,629.72 : x
2. Step 2: Convert to fraction form
   16,856.86/36,629.72 = 36,629.72/x
3. Step 3: Cross multiply
   16,856.86x = 36,629.72 × 36,629.72
4. Step 4: Simplify right side
   16,856.86x = 1,341,736,295.70
5. Step 5: Solve for x
   x = 1,341,736,295.70/16,856.86
6. Step 6: Final answer
   x = 79,595.86