Finding the Third Proportional to 54,718 and 89,340

Step by Step Solution

1. Step 1: Write the proportion equation
   54,718 : 89,340 = 89,340 : x
2. Step 2: Convert to fraction form
   54,718/89,340 = 89,340/x
3. Step 3: Cross multiply
   54,718x = 89,340 × 89,340
4. Step 4: Simplify right side
   54,718x = 7,981,635,600
5. Step 5: Solve for x
   x = 7,981,635,600/54,718
6. Step 6: Final answer
   x = 145,868.56