Finding the Third Proportional to 132,185 and 212,788.50

Step by Step Solution

1. Step 1: Write the proportion equation
   132,185 : 212,788.50 = 212,788.50 : x
2. Step 2: Convert to fraction form
   132,185/212,788.50 = 212,788.50/x
3. Step 3: Cross multiply
   132,185x = 212,788.50 × 212,788.50
4. Step 4: Simplify right side
   132,185x = 45,278,945,732.25
5. Step 5: Solve for x
   x = 45,278,945,732.25/132,185
6. Step 6: Final answer
   x = 342,542.24