Finding the Third Proportional to 158,724 and 215,322.75

Step by Step Solution

1. Step 1: Write the proportion equation
   158,724 : 215,322.75 = 215,322.75 : x
2. Step 2: Convert to fraction form
   158,724/215,322.75 = 215,322.75/x
3. Step 3: Cross multiply
   158,724x = 215,322.75 × 215,322.75
4. Step 4: Simplify right side
   158,724x = 46,363,886,667.56
5. Step 5: Solve for x
   x = 46,363,886,667.56/158,724
6. Step 6: Final answer
   x = 292,103.82