Finding the Third Proportional to 111,423 and 168,079.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,423 : 168,079.50 = 168,079.50 : x
2. Step 2: Convert to fraction form
   111,423/168,079.50 = 168,079.50/x
3. Step 3: Cross multiply
   111,423x = 168,079.50 × 168,079.50
4. Step 4: Simplify right side
   111,423x = 28,250,718,320.25
5. Step 5: Solve for x
   x = 28,250,718,320.25/111,423
6. Step 6: Final answer
   x = 253,544.76