Finding the Third Proportional to 30,992.50 and 67,745

Step by Step Solution

1. Step 1: Write the proportion equation
   30,992.50 : 67,745 = 67,745 : x
2. Step 2: Convert to fraction form
   30,992.50/67,745 = 67,745/x
3. Step 3: Cross multiply
   30,992.50x = 67,745 × 67,745
4. Step 4: Simplify right side
   30,992.50x = 4,589,385,025
5. Step 5: Solve for x
   x = 4,589,385,025/30,992.50
6. Step 6: Final answer
   x = 148,080.50