Finding the Third Proportional to 16,434.75 and 35,979.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,434.75 : 35,979.28 = 35,979.28 : x
2. Step 2: Convert to fraction form
   16,434.75/35,979.28 = 35,979.28/x
3. Step 3: Cross multiply
   16,434.75x = 35,979.28 × 35,979.28
4. Step 4: Simplify right side
   16,434.75x = 1,294,508,679.27
5. Step 5: Solve for x
   x = 1,294,508,679.27/16,434.75
6. Step 6: Final answer
   x = 78,766.56