Finding the Third Proportional to 451,840 and 978,069

Step by Step Solution

1. Step 1: Write the proportion equation
   451,840 : 978,069 = 978,069 : x
2. Step 2: Convert to fraction form
   451,840/978,069 = 978,069/x
3. Step 3: Cross multiply
   451,840x = 978,069 × 978,069
4. Step 4: Simplify right side
   451,840x = 956,618,968,761
5. Step 5: Solve for x
   x = 956,618,968,761/451,840
6. Step 6: Final answer
   x = 2,117,163.09