Finding the Third Proportional to 30,208.88 and 64,791.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,208.88 : 64,791.75 = 64,791.75 : x
2. Step 2: Convert to fraction form
   30,208.88/64,791.75 = 64,791.75/x
3. Step 3: Cross multiply
   30,208.88x = 64,791.75 × 64,791.75
4. Step 4: Simplify right side
   30,208.88x = 4,197,970,868.06
5. Step 5: Solve for x
   x = 4,197,970,868.06/30,208.88
6. Step 6: Final answer
   x = 138,964.82