Finding the Third Proportional to 406,425 and 632,898

Step by Step Solution

1. Step 1: Write the proportion equation
   406,425 : 632,898 = 632,898 : x
2. Step 2: Convert to fraction form
   406,425/632,898 = 632,898/x
3. Step 3: Cross multiply
   406,425x = 632,898 × 632,898
4. Step 4: Simplify right side
   406,425x = 400,559,878,404
5. Step 5: Solve for x
   x = 400,559,878,404/406,425
6. Step 6: Final answer
   x = 985,568.99