Finding the Third Proportional to 78,304 and 111,624

Step by Step Solution

1. Step 1: Write the proportion equation
   78,304 : 111,624 = 111,624 : x
2. Step 2: Convert to fraction form
   78,304/111,624 = 111,624/x
3. Step 3: Cross multiply
   78,304x = 111,624 × 111,624
4. Step 4: Simplify right side
   78,304x = 12,459,917,376
5. Step 5: Solve for x
   x = 12,459,917,376/78,304
6. Step 6: Final answer
   x = 159,122.36