Finding the Third Proportional to 191,066 and 404,889

Step by Step Solution

1. Step 1: Write the proportion equation
   191,066 : 404,889 = 404,889 : x
2. Step 2: Convert to fraction form
   191,066/404,889 = 404,889/x
3. Step 3: Cross multiply
   191,066x = 404,889 × 404,889
4. Step 4: Simplify right side
   191,066x = 163,935,102,321
5. Step 5: Solve for x
   x = 163,935,102,321/191,066
6. Step 6: Final answer
   x = 858,002.48