Finding the Third Proportional to 58,606.50 and 128,238

Step by Step Solution

1. Step 1: Write the proportion equation
   58,606.50 : 128,238 = 128,238 : x
2. Step 2: Convert to fraction form
   58,606.50/128,238 = 128,238/x
3. Step 3: Cross multiply
   58,606.50x = 128,238 × 128,238
4. Step 4: Simplify right side
   58,606.50x = 16,444,984,644
5. Step 5: Solve for x
   x = 16,444,984,644/58,606.50
6. Step 6: Final answer
   x = 280,600.01