Finding the Third Proportional to 451,852 and 978,090

Step by Step Solution

1. Step 1: Write the proportion equation
   451,852 : 978,090 = 978,090 : x
2. Step 2: Convert to fraction form
   451,852/978,090 = 978,090/x
3. Step 3: Cross multiply
   451,852x = 978,090 × 978,090
4. Step 4: Simplify right side
   451,852x = 956,660,048,100
5. Step 5: Solve for x
   x = 956,660,048,100/451,852
6. Step 6: Final answer
   x = 2,117,197.77