Finding the Third Proportional to 56,520 and 123,300

Step by Step Solution

1. Step 1: Write the proportion equation
   56,520 : 123,300 = 123,300 : x
2. Step 2: Convert to fraction form
   56,520/123,300 = 123,300/x
3. Step 3: Cross multiply
   56,520x = 123,300 × 123,300
4. Step 4: Simplify right side
   56,520x = 15,202,890,000
5. Step 5: Solve for x
   x = 15,202,890,000/56,520
6. Step 6: Final answer
   x = 268,982.48