Finding the Third Proportional to 90,587 and 213,150

Step by Step Solution

1. Step 1: Write the proportion equation
   90,587 : 213,150 = 213,150 : x
2. Step 2: Convert to fraction form
   90,587/213,150 = 213,150/x
3. Step 3: Cross multiply
   90,587x = 213,150 × 213,150
4. Step 4: Simplify right side
   90,587x = 45,432,922,500
5. Step 5: Solve for x
   x = 45,432,922,500/90,587
6. Step 6: Final answer
   x = 501,539.10