Finding the Third Proportional to 162,189 and 243,040.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,189 : 243,040.50 = 243,040.50 : x
2. Step 2: Convert to fraction form
   162,189/243,040.50 = 243,040.50/x
3. Step 3: Cross multiply
   162,189x = 243,040.50 × 243,040.50
4. Step 4: Simplify right side
   162,189x = 59,068,684,640.25
5. Step 5: Solve for x
   x = 59,068,684,640.25/162,189
6. Step 6: Final answer
   x = 364,196.61