Finding the Third Proportional to 158,706 and 215,300

Step by Step Solution

1. Step 1: Write the proportion equation
   158,706 : 215,300 = 215,300 : x
2. Step 2: Convert to fraction form
   158,706/215,300 = 215,300/x
3. Step 3: Cross multiply
   158,706x = 215,300 × 215,300
4. Step 4: Simplify right side
   158,706x = 46,354,090,000
5. Step 5: Solve for x
   x = 46,354,090,000/158,706
6. Step 6: Final answer
   x = 292,075.22