Finding the Third Proportional to 132,182 and 212,784

Step by Step Solution

1. Step 1: Write the proportion equation
   132,182 : 212,784 = 212,784 : x
2. Step 2: Convert to fraction form
   132,182/212,784 = 212,784/x
3. Step 3: Cross multiply
   132,182x = 212,784 × 212,784
4. Step 4: Simplify right side
   132,182x = 45,277,030,656
5. Step 5: Solve for x
   x = 45,277,030,656/132,182
6. Step 6: Final answer
   x = 342,535.52