Finding the Third Proportional to 188,630 and 404,253

Step by Step Solution

1. Step 1: Write the proportion equation
   188,630 : 404,253 = 404,253 : x
2. Step 2: Convert to fraction form
   188,630/404,253 = 404,253/x
3. Step 3: Cross multiply
   188,630x = 404,253 × 404,253
4. Step 4: Simplify right side
   188,630x = 163,420,488,009
5. Step 5: Solve for x
   x = 163,420,488,009/188,630
6. Step 6: Final answer
   x = 866,354.71