Finding the Third Proportional to 133,039 and 288,222

Step by Step Solution

1. Step 1: Write the proportion equation
   133,039 : 288,222 = 288,222 : x
2. Step 2: Convert to fraction form
   133,039/288,222 = 288,222/x
3. Step 3: Cross multiply
   133,039x = 288,222 × 288,222
4. Step 4: Simplify right side
   133,039x = 83,071,921,284
5. Step 5: Solve for x
   x = 83,071,921,284/133,039
6. Step 6: Final answer
   x = 624,417.81