Finding the Third Proportional to 72,415.69 and 110,778.47

Step by Step Solution

1. Step 1: Write the proportion equation
   72,415.69 : 110,778.47 = 110,778.47 : x
2. Step 2: Convert to fraction form
   72,415.69/110,778.47 = 110,778.47/x
3. Step 3: Cross multiply
   72,415.69x = 110,778.47 × 110,778.47
4. Step 4: Simplify right side
   72,415.69x = 12,271,869,138.59
5. Step 5: Solve for x
   x = 12,271,869,138.59/72,415.69
6. Step 6: Final answer
   x = 169,464.24