Finding the Third Proportional to 274,239 and 423,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   274,239 : 423,796.50 = 423,796.50 : x
2. Step 2: Convert to fraction form
   274,239/423,796.50 = 423,796.50/x
3. Step 3: Cross multiply
   274,239x = 423,796.50 × 423,796.50
4. Step 4: Simplify right side
   274,239x = 179,603,473,412.25
5. Step 5: Solve for x
   x = 179,603,473,412.25/274,239
6. Step 6: Final answer
   x = 654,915.87