Finding the Third Proportional to 274,006.25 and 429,945.38

Step by Step Solution

1. Step 1: Write the proportion equation
   274,006.25 : 429,945.38 = 429,945.38 : x
2. Step 2: Convert to fraction form
   274,006.25/429,945.38 = 429,945.38/x
3. Step 3: Cross multiply
   274,006.25x = 429,945.38 × 429,945.38
4. Step 4: Simplify right side
   274,006.25x = 184,853,025,483.89
5. Step 5: Solve for x
   x = 184,853,025,483.89/274,006.25
6. Step 6: Final answer
   x = 674,630.69