Finding the Third Proportional to 87,291 and 186,030

Step by Step Solution

1. Step 1: Write the proportion equation
   87,291 : 186,030 = 186,030 : x
2. Step 2: Convert to fraction form
   87,291/186,030 = 186,030/x
3. Step 3: Cross multiply
   87,291x = 186,030 × 186,030
4. Step 4: Simplify right side
   87,291x = 34,607,160,900
5. Step 5: Solve for x
   x = 34,607,160,900/87,291
6. Step 6: Final answer
   x = 396,457.38