Finding the Third Proportional to 16,508.81 and 35,709.61

Step by Step Solution

1. Step 1: Write the proportion equation
   16,508.81 : 35,709.61 = 35,709.61 : x
2. Step 2: Convert to fraction form
   16,508.81/35,709.61 = 35,709.61/x
3. Step 3: Cross multiply
   16,508.81x = 35,709.61 × 35,709.61
4. Step 4: Simplify right side
   16,508.81x = 1,275,176,201.72
5. Step 5: Solve for x
   x = 1,275,176,201.72/16,508.81
6. Step 6: Final answer
   x = 77,242.15