Finding the Third Proportional to 158,611.50 and 215,311.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,611.50 : 215,311.50 = 215,311.50 : x
2. Step 2: Convert to fraction form
   158,611.50/215,311.50 = 215,311.50/x
3. Step 3: Cross multiply
   158,611.50x = 215,311.50 × 215,311.50
4. Step 4: Simplify right side
   158,611.50x = 46,359,042,032.25
5. Step 5: Solve for x
   x = 46,359,042,032.25/158,611.50
6. Step 6: Final answer
   x = 292,280.46