Finding the Third Proportional to 30,940.50 and 67,677

Step by Step Solution

1. Step 1: Write the proportion equation
   30,940.50 : 67,677 = 67,677 : x
2. Step 2: Convert to fraction form
   30,940.50/67,677 = 67,677/x
3. Step 3: Cross multiply
   30,940.50x = 67,677 × 67,677
4. Step 4: Simplify right side
   30,940.50x = 4,580,176,329
5. Step 5: Solve for x
   x = 4,580,176,329/30,940.50
6. Step 6: Final answer
   x = 148,031.75