Finding the Third Proportional to 404,321 and 634,184

Step by Step Solution

1. Step 1: Write the proportion equation
   404,321 : 634,184 = 634,184 : x
2. Step 2: Convert to fraction form
   404,321/634,184 = 634,184/x
3. Step 3: Cross multiply
   404,321x = 634,184 × 634,184
4. Step 4: Simplify right side
   404,321x = 402,189,345,856
5. Step 5: Solve for x
   x = 402,189,345,856/404,321
6. Step 6: Final answer
   x = 994,727.82