Finding the Third Proportional to 162,540 and 215,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,540 : 215,670.50 = 215,670.50 : x
2. Step 2: Convert to fraction form
   162,540/215,670.50 = 215,670.50/x
3. Step 3: Cross multiply
   162,540x = 215,670.50 × 215,670.50
4. Step 4: Simplify right side
   162,540x = 46,513,764,570.25
5. Step 5: Solve for x
   x = 46,513,764,570.25/162,540
6. Step 6: Final answer
   x = 286,168.11