Finding the Third Proportional to 40,518 and 87,030

Step by Step Solution

1. Step 1: Write the proportion equation
   40,518 : 87,030 = 87,030 : x
2. Step 2: Convert to fraction form
   40,518/87,030 = 87,030/x
3. Step 3: Cross multiply
   40,518x = 87,030 × 87,030
4. Step 4: Simplify right side
   40,518x = 7,574,220,900
5. Step 5: Solve for x
   x = 7,574,220,900/40,518
6. Step 6: Final answer
   x = 186,934.72