Finding the Third Proportional to 79,488 and 111,409.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,488 : 111,409.50 = 111,409.50 : x
2. Step 2: Convert to fraction form
   79,488/111,409.50 = 111,409.50/x
3. Step 3: Cross multiply
   79,488x = 111,409.50 × 111,409.50
4. Step 4: Simplify right side
   79,488x = 12,412,076,690.25
5. Step 5: Solve for x
   x = 12,412,076,690.25/79,488
6. Step 6: Final answer
   x = 156,150.32