Finding the Third Proportional to 158,758 and 215,611

Step by Step Solution

1. Step 1: Write the proportion equation
   158,758 : 215,611 = 215,611 : x
2. Step 2: Convert to fraction form
   158,758/215,611 = 215,611/x
3. Step 3: Cross multiply
   158,758x = 215,611 × 215,611
4. Step 4: Simplify right side
   158,758x = 46,488,103,321
5. Step 5: Solve for x
   x = 46,488,103,321/158,758
6. Step 6: Final answer
   x = 292,823.69