Finding the Third Proportional to 491,413.50 and 660,354

Step by Step Solution

1. Step 1: Write the proportion equation
   491,413.50 : 660,354 = 660,354 : x
2. Step 2: Convert to fraction form
   491,413.50/660,354 = 660,354/x
3. Step 3: Cross multiply
   491,413.50x = 660,354 × 660,354
4. Step 4: Simplify right side
   491,413.50x = 436,067,405,316
5. Step 5: Solve for x
   x = 436,067,405,316/491,413.50
6. Step 6: Final answer
   x = 887,373.68