Finding the Third Proportional to 56,299.50 and 123,674.63

Step by Step Solution

1. Step 1: Write the proportion equation
   56,299.50 : 123,674.63 = 123,674.63 : x
2. Step 2: Convert to fraction form
   56,299.50/123,674.63 = 123,674.63/x
3. Step 3: Cross multiply
   56,299.50x = 123,674.63 × 123,674.63
4. Step 4: Simplify right side
   56,299.50x = 15,295,412,868.89
5. Step 5: Solve for x
   x = 15,295,412,868.89/56,299.50
6. Step 6: Final answer
   x = 271,679.37