Finding the Third Proportional to 67.78 and 147.94

Step by Step Solution

1. Step 1: Write the proportion equation
   67.78 : 147.94 = 147.94 : x
2. Step 2: Convert to fraction form
   67.78/147.94 = 147.94/x
3. Step 3: Cross multiply
   67.78x = 147.94 × 147.94
4. Step 4: Simplify right side
   67.78x = 21,885.50
5. Step 5: Solve for x
   x = 21,885.50/67.78
6. Step 6: Final answer
   x = 322.88