Finding the Third Proportional to 406,439 and 632,922.50

Step by Step Solution

1. Step 1: Write the proportion equation
   406,439 : 632,922.50 = 632,922.50 : x
2. Step 2: Convert to fraction form
   406,439/632,922.50 = 632,922.50/x
3. Step 3: Cross multiply
   406,439x = 632,922.50 × 632,922.50
4. Step 4: Simplify right side
   406,439x = 400,590,891,006.25
5. Step 5: Solve for x
   x = 400,590,891,006.25/406,439
6. Step 6: Final answer
   x = 985,611.35