Finding the Third Proportional to 192,322.69 and 408,429

Step by Step Solution

1. Step 1: Write the proportion equation
   192,322.69 : 408,429 = 408,429 : x
2. Step 2: Convert to fraction form
   192,322.69/408,429 = 408,429/x
3. Step 3: Cross multiply
   192,322.69x = 408,429 × 408,429
4. Step 4: Simplify right side
   192,322.69x = 166,814,248,041
5. Step 5: Solve for x
   x = 166,814,248,041/192,322.69
6. Step 6: Final answer
   x = 867,366.46