Finding the Third Proportional to 30,840.50 and 64,105

Step by Step Solution

1. Step 1: Write the proportion equation
   30,840.50 : 64,105 = 64,105 : x
2. Step 2: Convert to fraction form
   30,840.50/64,105 = 64,105/x
3. Step 3: Cross multiply
   30,840.50x = 64,105 × 64,105
4. Step 4: Simplify right side
   30,840.50x = 4,109,451,025
5. Step 5: Solve for x
   x = 4,109,451,025/30,840.50
6. Step 6: Final answer
   x = 133,248.52