Finding the Third Proportional to 501,968 and 978,715

Step by Step Solution

1. Step 1: Write the proportion equation
   501,968 : 978,715 = 978,715 : x
2. Step 2: Convert to fraction form
   501,968/978,715 = 978,715/x
3. Step 3: Cross multiply
   501,968x = 978,715 × 978,715
4. Step 4: Simplify right side
   501,968x = 957,883,051,225
5. Step 5: Solve for x
   x = 957,883,051,225/501,968
6. Step 6: Final answer
   x = 1,908,255.21