Finding the Third Proportional to 127,152 and 172,690

Step by Step Solution

1. Step 1: Write the proportion equation
   127,152 : 172,690 = 172,690 : x
2. Step 2: Convert to fraction form
   127,152/172,690 = 172,690/x
3. Step 3: Cross multiply
   127,152x = 172,690 × 172,690
4. Step 4: Simplify right side
   127,152x = 29,821,836,100
5. Step 5: Solve for x
   x = 29,821,836,100/127,152
6. Step 6: Final answer
   x = 234,536.90