Finding the Third Proportional to 16,853.91 and 36,931.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,853.91 : 36,931.78 = 36,931.78 : x
2. Step 2: Convert to fraction form
   16,853.91/36,931.78 = 36,931.78/x
3. Step 3: Cross multiply
   16,853.91x = 36,931.78 × 36,931.78
4. Step 4: Simplify right side
   16,853.91x = 1,363,956,466.30
5. Step 5: Solve for x
   x = 1,363,956,466.30/16,853.91
6. Step 6: Final answer
   x = 80,928.21