Finding the Third Proportional to 30,850 and 67,760

Step by Step Solution

1. Step 1: Write the proportion equation
   30,850 : 67,760 = 67,760 : x
2. Step 2: Convert to fraction form
   30,850/67,760 = 67,760/x
3. Step 3: Cross multiply
   30,850x = 67,760 × 67,760
4. Step 4: Simplify right side
   30,850x = 4,591,417,600
5. Step 5: Solve for x
   x = 4,591,417,600/30,850
6. Step 6: Final answer
   x = 148,830.39