Finding the Third Proportional to 115,417.41 and 172,662.89

Step by Step Solution

1. Step 1: Write the proportion equation
   115,417.41 : 172,662.89 = 172,662.89 : x
2. Step 2: Convert to fraction form
   115,417.41/172,662.89 = 172,662.89/x
3. Step 3: Cross multiply
   115,417.41x = 172,662.89 × 172,662.89
4. Step 4: Simplify right side
   115,417.41x = 29,812,473,798.98
5. Step 5: Solve for x
   x = 29,812,473,798.98/115,417.41
6. Step 6: Final answer
   x = 258,301.37