Finding the Third Proportional to 369,615 and 528,556.50

Step by Step Solution

1. Step 1: Write the proportion equation
   369,615 : 528,556.50 = 528,556.50 : x
2. Step 2: Convert to fraction form
   369,615/528,556.50 = 528,556.50/x
3. Step 3: Cross multiply
   369,615x = 528,556.50 × 528,556.50
4. Step 4: Simplify right side
   369,615x = 279,371,973,692.25
5. Step 5: Solve for x
   x = 279,371,973,692.25/369,615
6. Step 6: Final answer
   x = 755,845.88