Finding the Third Proportional to 30,207.94 and 64,789.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,207.94 : 64,789.88 = 64,789.88 : x
2. Step 2: Convert to fraction form
   30,207.94/64,789.88 = 64,789.88/x
3. Step 3: Cross multiply
   30,207.94x = 64,789.88 × 64,789.88
4. Step 4: Simplify right side
   30,207.94x = 4,197,727,902.52
5. Step 5: Solve for x
   x = 4,197,727,902.52/30,207.94
6. Step 6: Final answer
   x = 138,961.09