Finding the Third Proportional to 55,479 and 90,582

Step by Step Solution

1. Step 1: Write the proportion equation
   55,479 : 90,582 = 90,582 : x
2. Step 2: Convert to fraction form
   55,479/90,582 = 90,582/x
3. Step 3: Cross multiply
   55,479x = 90,582 × 90,582
4. Step 4: Simplify right side
   55,479x = 8,205,098,724
5. Step 5: Solve for x
   x = 8,205,098,724/55,479
6. Step 6: Final answer
   x = 147,895.58