Finding the Third Proportional to 158,697 and 215,287.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,697 : 215,287.50 = 215,287.50 : x
2. Step 2: Convert to fraction form
   158,697/215,287.50 = 215,287.50/x
3. Step 3: Cross multiply
   158,697x = 215,287.50 × 215,287.50
4. Step 4: Simplify right side
   158,697x = 46,348,707,656.25
5. Step 5: Solve for x
   x = 46,348,707,656.25/158,697
6. Step 6: Final answer
   x = 292,057.87