Finding the Third Proportional to 136,515 and 203,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   136,515 : 203,719.50 = 203,719.50 : x
2. Step 2: Convert to fraction form
   136,515/203,719.50 = 203,719.50/x
3. Step 3: Cross multiply
   136,515x = 203,719.50 × 203,719.50
4. Step 4: Simplify right side
   136,515x = 41,501,634,680.25
5. Step 5: Solve for x
   x = 41,501,634,680.25/136,515
6. Step 6: Final answer
   x = 304,007.87