Finding the Third Proportional to 189,305.50 and 404,876

Step by Step Solution

1. Step 1: Write the proportion equation
   189,305.50 : 404,876 = 404,876 : x
2. Step 2: Convert to fraction form
   189,305.50/404,876 = 404,876/x
3. Step 3: Cross multiply
   189,305.50x = 404,876 × 404,876
4. Step 4: Simplify right side
   189,305.50x = 163,924,575,376
5. Step 5: Solve for x
   x = 163,924,575,376/189,305.50
6. Step 6: Final answer
   x = 865,926.11