Finding the Third Proportional to 78,240 and 112,122

Step by Step Solution

1. Step 1: Write the proportion equation
   78,240 : 112,122 = 112,122 : x
2. Step 2: Convert to fraction form
   78,240/112,122 = 112,122/x
3. Step 3: Cross multiply
   78,240x = 112,122 × 112,122
4. Step 4: Simplify right side
   78,240x = 12,571,342,884
5. Step 5: Solve for x
   x = 12,571,342,884/78,240
6. Step 6: Final answer
   x = 160,676.67