Finding the Third Proportional to 78,652 and 172,068

Step by Step Solution

1. Step 1: Write the proportion equation
   78,652 : 172,068 = 172,068 : x
2. Step 2: Convert to fraction form
   78,652/172,068 = 172,068/x
3. Step 3: Cross multiply
   78,652x = 172,068 × 172,068
4. Step 4: Simplify right side
   78,652x = 29,607,396,624
5. Step 5: Solve for x
   x = 29,607,396,624/78,652
6. Step 6: Final answer
   x = 376,435.39