Finding the Third Proportional to 163,998 and 215,338.50

Step by Step Solution

1. Step 1: Write the proportion equation
   163,998 : 215,338.50 = 215,338.50 : x
2. Step 2: Convert to fraction form
   163,998/215,338.50 = 215,338.50/x
3. Step 3: Cross multiply
   163,998x = 215,338.50 × 215,338.50
4. Step 4: Simplify right side
   163,998x = 46,370,669,582.25
5. Step 5: Solve for x
   x = 46,370,669,582.25/163,998
6. Step 6: Final answer
   x = 282,751.43