Finding the Third Proportional to 156,661 and 288,171

Step by Step Solution

1. Step 1: Write the proportion equation
   156,661 : 288,171 = 288,171 : x
2. Step 2: Convert to fraction form
   156,661/288,171 = 288,171/x
3. Step 3: Cross multiply
   156,661x = 288,171 × 288,171
4. Step 4: Simplify right side
   156,661x = 83,042,525,241
5. Step 5: Solve for x
   x = 83,042,525,241/156,661
6. Step 6: Final answer
   x = 530,077.84