Finding the Third Proportional to 645,465 and 995,413.50

Step by Step Solution

1. Step 1: Write the proportion equation
   645,465 : 995,413.50 = 995,413.50 : x
2. Step 2: Convert to fraction form
   645,465/995,413.50 = 995,413.50/x
3. Step 3: Cross multiply
   645,465x = 995,413.50 × 995,413.50
4. Step 4: Simplify right side
   645,465x = 990,848,035,982.25
5. Step 5: Solve for x
   x = 990,848,035,982.25/645,465
6. Step 6: Final answer
   x = 1,535,091.81