Finding the Third Proportional to 172,003.50 and 364,905

Step by Step Solution

1. Step 1: Write the proportion equation
   172,003.50 : 364,905 = 364,905 : x
2. Step 2: Convert to fraction form
   172,003.50/364,905 = 364,905/x
3. Step 3: Cross multiply
   172,003.50x = 364,905 × 364,905
4. Step 4: Simplify right side
   172,003.50x = 133,155,659,025
5. Step 5: Solve for x
   x = 133,155,659,025/172,003.50
6. Step 6: Final answer
   x = 774,145.06