Finding the Third Proportional to 401,403 and 620,092.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,403 : 620,092.50 = 620,092.50 : x
2. Step 2: Convert to fraction form
   401,403/620,092.50 = 620,092.50/x
3. Step 3: Cross multiply
   401,403x = 620,092.50 × 620,092.50
4. Step 4: Simplify right side
   401,403x = 384,514,708,556.25
5. Step 5: Solve for x
   x = 384,514,708,556.25/401,403
6. Step 6: Final answer
   x = 957,926.84