Finding the Third Proportional to 121,200.05 and 162,111.38

Step by Step Solution

1. Step 1: Write the proportion equation
   121,200.05 : 162,111.38 = 162,111.38 : x
2. Step 2: Convert to fraction form
   121,200.05/162,111.38 = 162,111.38/x
3. Step 3: Cross multiply
   121,200.05x = 162,111.38 × 162,111.38
4. Step 4: Simplify right side
   121,200.05x = 26,280,097,904.39
5. Step 5: Solve for x
   x = 26,280,097,904.39/121,200.05
6. Step 6: Final answer
   x = 216,832.41