Finding the Third Proportional to 132,437.50 and 286,872

Step by Step Solution

1. Step 1: Write the proportion equation
   132,437.50 : 286,872 = 286,872 : x
2. Step 2: Convert to fraction form
   132,437.50/286,872 = 286,872/x
3. Step 3: Cross multiply
   132,437.50x = 286,872 × 286,872
4. Step 4: Simplify right side
   132,437.50x = 82,295,544,384
5. Step 5: Solve for x
   x = 82,295,544,384/132,437.50
6. Step 6: Final answer
   x = 621,391.56