Finding the Third Proportional to 122,351.63 and 172,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,351.63 : 172,300.50 = 172,300.50 : x
2. Step 2: Convert to fraction form
   122,351.63/172,300.50 = 172,300.50/x
3. Step 3: Cross multiply
   122,351.63x = 172,300.50 × 172,300.50
4. Step 4: Simplify right side
   122,351.63x = 29,687,462,300.25
5. Step 5: Solve for x
   x = 29,687,462,300.25/122,351.63
6. Step 6: Final answer
   x = 242,640.52