Finding the Third Proportional to 388,032 and 579,658.25

Step by Step Solution

1. Step 1: Write the proportion equation
   388,032 : 579,658.25 = 579,658.25 : x
2. Step 2: Convert to fraction form
   388,032/579,658.25 = 579,658.25/x
3. Step 3: Cross multiply
   388,032x = 579,658.25 × 579,658.25
4. Step 4: Simplify right side
   388,032x = 336,003,686,793.06
5. Step 5: Solve for x
   x = 336,003,686,793.06/388,032
6. Step 6: Final answer
   x = 865,917.47