Finding the Third Proportional to 134,078 and 213,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   134,078 : 213,418.50 = 213,418.50 : x
2. Step 2: Convert to fraction form
   134,078/213,418.50 = 213,418.50/x
3. Step 3: Cross multiply
   134,078x = 213,418.50 × 213,418.50
4. Step 4: Simplify right side
   134,078x = 45,547,456,142.25
5. Step 5: Solve for x
   x = 45,547,456,142.25/134,078
6. Step 6: Final answer
   x = 339,708.65