Finding the Third Proportional to 78,887 and 173,074

Step by Step Solution

1. Step 1: Write the proportion equation
   78,887 : 173,074 = 173,074 : x
2. Step 2: Convert to fraction form
   78,887/173,074 = 173,074/x
3. Step 3: Cross multiply
   78,887x = 173,074 × 173,074
4. Step 4: Simplify right side
   78,887x = 29,954,609,476
5. Step 5: Solve for x
   x = 29,954,609,476/78,887
6. Step 6: Final answer
   x = 379,715.41