Finding the Third Proportional to 54,679 and 89,284

Step by Step Solution

1. Step 1: Write the proportion equation
   54,679 : 89,284 = 89,284 : x
2. Step 2: Convert to fraction form
   54,679/89,284 = 89,284/x
3. Step 3: Cross multiply
   54,679x = 89,284 × 89,284
4. Step 4: Simplify right side
   54,679x = 7,971,632,656
5. Step 5: Solve for x
   x = 7,971,632,656/54,679
6. Step 6: Final answer
   x = 145,789.66