Finding the Third Proportional to 172,341.50 and 364,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,341.50 : 364,554.50 = 364,554.50 : x
2. Step 2: Convert to fraction form
   172,341.50/364,554.50 = 364,554.50/x
3. Step 3: Cross multiply
   172,341.50x = 364,554.50 × 364,554.50
4. Step 4: Simplify right side
   172,341.50x = 132,899,983,470.25
5. Step 5: Solve for x
   x = 132,899,983,470.25/172,341.50
6. Step 6: Final answer
   x = 771,143.24