Finding the Third Proportional to 386,354 and 849,786.50

Step by Step Solution

1. Step 1: Write the proportion equation
   386,354 : 849,786.50 = 849,786.50 : x
2. Step 2: Convert to fraction form
   386,354/849,786.50 = 849,786.50/x
3. Step 3: Cross multiply
   386,354x = 849,786.50 × 849,786.50
4. Step 4: Simplify right side
   386,354x = 722,137,095,582.25
5. Step 5: Solve for x
   x = 722,137,095,582.25/386,354
6. Step 6: Final answer
   x = 1,869,107.34