Finding the Third Proportional to 406,388 and 632,852

Step by Step Solution

1. Step 1: Write the proportion equation
   406,388 : 632,852 = 632,852 : x
2. Step 2: Convert to fraction form
   406,388/632,852 = 632,852/x
3. Step 3: Cross multiply
   406,388x = 632,852 × 632,852
4. Step 4: Simplify right side
   406,388x = 400,501,653,904
5. Step 5: Solve for x
   x = 400,501,653,904/406,388
6. Step 6: Final answer
   x = 985,515.45