Finding the Third Proportional to 30,912 and 67,604

Step by Step Solution

1. Step 1: Write the proportion equation
   30,912 : 67,604 = 67,604 : x
2. Step 2: Convert to fraction form
   30,912/67,604 = 67,604/x
3. Step 3: Cross multiply
   30,912x = 67,604 × 67,604
4. Step 4: Simplify right side
   30,912x = 4,570,300,816
5. Step 5: Solve for x
   x = 4,570,300,816/30,912
6. Step 6: Final answer
   x = 147,848.76