Finding the Third Proportional to 274,666.50 and 661,468.50

Step by Step Solution

1. Step 1: Write the proportion equation
   274,666.50 : 661,468.50 = 661,468.50 : x
2. Step 2: Convert to fraction form
   274,666.50/661,468.50 = 661,468.50/x
3. Step 3: Cross multiply
   274,666.50x = 661,468.50 × 661,468.50
4. Step 4: Simplify right side
   274,666.50x = 437,540,576,492.25
5. Step 5: Solve for x
   x = 437,540,576,492.25/274,666.50
6. Step 6: Final answer
   x = 1,592,988.50