Finding the Third Proportional to 501,972 and 978,726

Step by Step Solution

1. Step 1: Write the proportion equation
   501,972 : 978,726 = 978,726 : x
2. Step 2: Convert to fraction form
   501,972/978,726 = 978,726/x
3. Step 3: Cross multiply
   501,972x = 978,726 × 978,726
4. Step 4: Simplify right side
   501,972x = 957,904,583,076
5. Step 5: Solve for x
   x = 957,904,583,076/501,972
6. Step 6: Final answer
   x = 1,908,282.90