Finding the Third Proportional to 388,250 and 585,111

Step by Step Solution

1. Step 1: Write the proportion equation
   388,250 : 585,111 = 585,111 : x
2. Step 2: Convert to fraction form
   388,250/585,111 = 585,111/x
3. Step 3: Cross multiply
   388,250x = 585,111 × 585,111
4. Step 4: Simplify right side
   388,250x = 342,354,882,321
5. Step 5: Solve for x
   x = 342,354,882,321/388,250
6. Step 6: Final answer
   x = 881,789.78