Finding the Third Proportional to 359,836 and 528,078

Step by Step Solution

1. Step 1: Write the proportion equation
   359,836 : 528,078 = 528,078 : x
2. Step 2: Convert to fraction form
   359,836/528,078 = 528,078/x
3. Step 3: Cross multiply
   359,836x = 528,078 × 528,078
4. Step 4: Simplify right side
   359,836x = 278,866,374,084
5. Step 5: Solve for x
   x = 278,866,374,084/359,836
6. Step 6: Final answer
   x = 774,981.86