Finding the Third Proportional to 30,962.25 and 67,839.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,962.25 : 67,839.75 = 67,839.75 : x
2. Step 2: Convert to fraction form
   30,962.25/67,839.75 = 67,839.75/x
3. Step 3: Cross multiply
   30,962.25x = 67,839.75 × 67,839.75
4. Step 4: Simplify right side
   30,962.25x = 4,602,231,680.06
5. Step 5: Solve for x
   x = 4,602,231,680.06/30,962.25
6. Step 6: Final answer
   x = 148,640.09