Finding the Third Proportional to 158,700 and 215,291.25

Step by Step Solution

1. Step 1: Write the proportion equation
   158,700 : 215,291.25 = 215,291.25 : x
2. Step 2: Convert to fraction form
   158,700/215,291.25 = 215,291.25/x
3. Step 3: Cross multiply
   158,700x = 215,291.25 × 215,291.25
4. Step 4: Simplify right side
   158,700x = 46,350,322,326.56
5. Step 5: Solve for x
   x = 46,350,322,326.56/158,700
6. Step 6: Final answer
   x = 292,062.52