Finding the Third Proportional to 197,262 and 288,510

Step by Step Solution

1. Step 1: Write the proportion equation
   197,262 : 288,510 = 288,510 : x
2. Step 2: Convert to fraction form
   197,262/288,510 = 288,510/x
3. Step 3: Cross multiply
   197,262x = 288,510 × 288,510
4. Step 4: Simplify right side
   197,262x = 83,238,020,100
5. Step 5: Solve for x
   x = 83,238,020,100/197,262
6. Step 6: Final answer
   x = 421,966.83