Finding the Third Proportional to 199,066.50 and 277,483.50

Step by Step Solution

1. Step 1: Write the proportion equation
   199,066.50 : 277,483.50 = 277,483.50 : x
2. Step 2: Convert to fraction form
   199,066.50/277,483.50 = 277,483.50/x
3. Step 3: Cross multiply
   199,066.50x = 277,483.50 × 277,483.50
4. Step 4: Simplify right side
   199,066.50x = 76,997,092,772.25
5. Step 5: Solve for x
   x = 76,997,092,772.25/199,066.50
6. Step 6: Final answer
   x = 386,790.81