Finding the Third Proportional to 218,996 and 287,562

Step by Step Solution

1. Step 1: Write the proportion equation
   218,996 : 287,562 = 287,562 : x
2. Step 2: Convert to fraction form
   218,996/287,562 = 287,562/x
3. Step 3: Cross multiply
   218,996x = 287,562 × 287,562
4. Step 4: Simplify right side
   218,996x = 82,691,903,844
5. Step 5: Solve for x
   x = 82,691,903,844/218,996
6. Step 6: Final answer
   x = 377,595.50