Finding the Third Proportional to 353,200.50 and 772,425

Step by Step Solution

1. Step 1: Write the proportion equation
   353,200.50 : 772,425 = 772,425 : x
2. Step 2: Convert to fraction form
   353,200.50/772,425 = 772,425/x
3. Step 3: Cross multiply
   353,200.50x = 772,425 × 772,425
4. Step 4: Simplify right side
   353,200.50x = 596,640,380,625
5. Step 5: Solve for x
   x = 596,640,380,625/353,200.50
6. Step 6: Final answer
   x = 1,689,239.91