Finding the Third Proportional to 132,346 and 288,020

Step by Step Solution

1. Step 1: Write the proportion equation
   132,346 : 288,020 = 288,020 : x
2. Step 2: Convert to fraction form
   132,346/288,020 = 288,020/x
3. Step 3: Cross multiply
   132,346x = 288,020 × 288,020
4. Step 4: Simplify right side
   132,346x = 82,955,520,400
5. Step 5: Solve for x
   x = 82,955,520,400/132,346
6. Step 6: Final answer
   x = 626,807.92