Finding the Third Proportional to 456,085 and 978,587

Step by Step Solution

1. Step 1: Write the proportion equation
   456,085 : 978,587 = 978,587 : x
2. Step 2: Convert to fraction form
   456,085/978,587 = 978,587/x
3. Step 3: Cross multiply
   456,085x = 978,587 × 978,587
4. Step 4: Simplify right side
   456,085x = 957,632,516,569
5. Step 5: Solve for x
   x = 957,632,516,569/456,085
6. Step 6: Final answer
   x = 2,099,679.92