Finding the Third Proportional to 172,001 and 259,009.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,001 : 259,009.50 = 259,009.50 : x
2. Step 2: Convert to fraction form
   172,001/259,009.50 = 259,009.50/x
3. Step 3: Cross multiply
   172,001x = 259,009.50 × 259,009.50
4. Step 4: Simplify right side
   172,001x = 67,085,921,090.25
5. Step 5: Solve for x
   x = 67,085,921,090.25/172,001
6. Step 6: Final answer
   x = 390,032.16