Finding the Third Proportional to 158,570 and 215,985

Step by Step Solution

1. Step 1: Write the proportion equation
   158,570 : 215,985 = 215,985 : x
2. Step 2: Convert to fraction form
   158,570/215,985 = 215,985/x
3. Step 3: Cross multiply
   158,570x = 215,985 × 215,985
4. Step 4: Simplify right side
   158,570x = 46,649,520,225
5. Step 5: Solve for x
   x = 46,649,520,225/158,570
6. Step 6: Final answer
   x = 294,188.81