Finding the Third Proportional to 63,078 and 137,356

Step by Step Solution

1. Step 1: Write the proportion equation
   63,078 : 137,356 = 137,356 : x
2. Step 2: Convert to fraction form
   63,078/137,356 = 137,356/x
3. Step 3: Cross multiply
   63,078x = 137,356 × 137,356
4. Step 4: Simplify right side
   63,078x = 18,866,670,736
5. Step 5: Solve for x
   x = 18,866,670,736/63,078
6. Step 6: Final answer
   x = 299,100.65