Finding the Third Proportional to 30,454.31 and 64,240.59

Step by Step Solution

1. Step 1: Write the proportion equation
   30,454.31 : 64,240.59 = 64,240.59 : x
2. Step 2: Convert to fraction form
   30,454.31/64,240.59 = 64,240.59/x
3. Step 3: Cross multiply
   30,454.31x = 64,240.59 × 64,240.59
4. Step 4: Simplify right side
   30,454.31x = 4,126,853,885.35
5. Step 5: Solve for x
   x = 4,126,853,885.35/30,454.31
6. Step 6: Final answer
   x = 135,509.67