Finding the Third Proportional to 128,733.50 and 269,238

Step by Step Solution

1. Step 1: Write the proportion equation
   128,733.50 : 269,238 = 269,238 : x
2. Step 2: Convert to fraction form
   128,733.50/269,238 = 269,238/x
3. Step 3: Cross multiply
   128,733.50x = 269,238 × 269,238
4. Step 4: Simplify right side
   128,733.50x = 72,489,100,644
5. Step 5: Solve for x
   x = 72,489,100,644/128,733.50
6. Step 6: Final answer
   x = 563,094.30