Finding the Third Proportional to 388,500 and 847,608

Step by Step Solution

1. Step 1: Write the proportion equation
   388,500 : 847,608 = 847,608 : x
2. Step 2: Convert to fraction form
   388,500/847,608 = 847,608/x
3. Step 3: Cross multiply
   388,500x = 847,608 × 847,608
4. Step 4: Simplify right side
   388,500x = 718,439,321,664
5. Step 5: Solve for x
   x = 718,439,321,664/388,500
6. Step 6: Final answer
   x = 1,849,264.66