Finding the Third Proportional to 172,422 and 252,066

Step by Step Solution

1. Step 1: Write the proportion equation
   172,422 : 252,066 = 252,066 : x
2. Step 2: Convert to fraction form
   172,422/252,066 = 252,066/x
3. Step 3: Cross multiply
   172,422x = 252,066 × 252,066
4. Step 4: Simplify right side
   172,422x = 63,537,268,356
5. Step 5: Solve for x
   x = 63,537,268,356/172,422
6. Step 6: Final answer
   x = 368,498.62