Finding the Third Proportional to 158,744 and 215,590

Step by Step Solution

1. Step 1: Write the proportion equation
   158,744 : 215,590 = 215,590 : x
2. Step 2: Convert to fraction form
   158,744/215,590 = 215,590/x
3. Step 3: Cross multiply
   158,744x = 215,590 × 215,590
4. Step 4: Simplify right side
   158,744x = 46,479,048,100
5. Step 5: Solve for x
   x = 46,479,048,100/158,744
6. Step 6: Final answer
   x = 292,792.47