Finding the Third Proportional to 369,774 and 528,415.50

Step by Step Solution

1. Step 1: Write the proportion equation
   369,774 : 528,415.50 = 528,415.50 : x
2. Step 2: Convert to fraction form
   369,774/528,415.50 = 528,415.50/x
3. Step 3: Cross multiply
   369,774x = 528,415.50 × 528,415.50
4. Step 4: Simplify right side
   369,774x = 279,222,940,640.25
5. Step 5: Solve for x
   x = 279,222,940,640.25/369,774
6. Step 6: Final answer
   x = 755,117.83