Finding the Third Proportional to 118,250 and 256,172

Step by Step Solution

1. Step 1: Write the proportion equation
   118,250 : 256,172 = 256,172 : x
2. Step 2: Convert to fraction form
   118,250/256,172 = 256,172/x
3. Step 3: Cross multiply
   118,250x = 256,172 × 256,172
4. Step 4: Simplify right side
   118,250x = 65,624,093,584
5. Step 5: Solve for x
   x = 65,624,093,584/118,250
6. Step 6: Final answer
   x = 554,960.62