Finding the Third Proportional to 191,011 and 404,786

Step by Step Solution

1. Step 1: Write the proportion equation
   191,011 : 404,786 = 404,786 : x
2. Step 2: Convert to fraction form
   191,011/404,786 = 404,786/x
3. Step 3: Cross multiply
   191,011x = 404,786 × 404,786
4. Step 4: Simplify right side
   191,011x = 163,851,705,796
5. Step 5: Solve for x
   x = 163,851,705,796/191,011
6. Step 6: Final answer
   x = 857,812.93