Finding the Third Proportional to 191,109 and 404,970

Step by Step Solution

1. Step 1: Write the proportion equation
   191,109 : 404,970 = 404,970 : x
2. Step 2: Convert to fraction form
   191,109/404,970 = 404,970/x
3. Step 3: Cross multiply
   191,109x = 404,970 × 404,970
4. Step 4: Simplify right side
   191,109x = 164,000,700,900
5. Step 5: Solve for x
   x = 164,000,700,900/191,109
6. Step 6: Final answer
   x = 858,152.68