Finding the Third Proportional to 359,836 and 528,090

Step by Step Solution

1. Step 1: Write the proportion equation
   359,836 : 528,090 = 528,090 : x
2. Step 2: Convert to fraction form
   359,836/528,090 = 528,090/x
3. Step 3: Cross multiply
   359,836x = 528,090 × 528,090
4. Step 4: Simplify right side
   359,836x = 278,879,048,100
5. Step 5: Solve for x
   x = 278,879,048,100/359,836
6. Step 6: Final answer
   x = 775,017.09