Finding the Third Proportional to 59,478 and 87,573

Step by Step Solution

1. Step 1: Write the proportion equation
   59,478 : 87,573 = 87,573 : x
2. Step 2: Convert to fraction form
   59,478/87,573 = 87,573/x
3. Step 3: Cross multiply
   59,478x = 87,573 × 87,573
4. Step 4: Simplify right side
   59,478x = 7,669,030,329
5. Step 5: Solve for x
   x = 7,669,030,329/59,478
6. Step 6: Final answer
   x = 128,938.94