Finding the Third Proportional to 71,385 and 111,030

Step by Step Solution

1. Step 1: Write the proportion equation
   71,385 : 111,030 = 111,030 : x
2. Step 2: Convert to fraction form
   71,385/111,030 = 111,030/x
3. Step 3: Cross multiply
   71,385x = 111,030 × 111,030
4. Step 4: Simplify right side
   71,385x = 12,327,660,900
5. Step 5: Solve for x
   x = 12,327,660,900/71,385
6. Step 6: Final answer
   x = 172,692.60