Finding the Third Proportional to 78,042 and 111,528

Step by Step Solution

1. Step 1: Write the proportion equation
   78,042 : 111,528 = 111,528 : x
2. Step 2: Convert to fraction form
   78,042/111,528 = 111,528/x
3. Step 3: Cross multiply
   78,042x = 111,528 × 111,528
4. Step 4: Simplify right side
   78,042x = 12,438,494,784
5. Step 5: Solve for x
   x = 12,438,494,784/78,042
6. Step 6: Final answer
   x = 159,382.06