Finding the Third Proportional to 132,388 and 288,072

Step by Step Solution

1. Step 1: Write the proportion equation
   132,388 : 288,072 = 288,072 : x
2. Step 2: Convert to fraction form
   132,388/288,072 = 288,072/x
3. Step 3: Cross multiply
   132,388x = 288,072 × 288,072
4. Step 4: Simplify right side
   132,388x = 82,985,477,184
5. Step 5: Solve for x
   x = 82,985,477,184/132,388
6. Step 6: Final answer
   x = 626,835.34