Finding the Third Proportional to 353,200.50 and 771,975

Step by Step Solution

1. Step 1: Write the proportion equation
   353,200.50 : 771,975 = 771,975 : x
2. Step 2: Convert to fraction form
   353,200.50/771,975 = 771,975/x
3. Step 3: Cross multiply
   353,200.50x = 771,975 × 771,975
4. Step 4: Simplify right side
   353,200.50x = 595,945,400,625
5. Step 5: Solve for x
   x = 595,945,400,625/353,200.50
6. Step 6: Final answer
   x = 1,687,272.25