Finding the Third Proportional to 123,500 and 266,200

Step by Step Solution

1. Step 1: Write the proportion equation
   123,500 : 266,200 = 266,200 : x
2. Step 2: Convert to fraction form
   123,500/266,200 = 266,200/x
3. Step 3: Cross multiply
   123,500x = 266,200 × 266,200
4. Step 4: Simplify right side
   123,500x = 70,862,440,000
5. Step 5: Solve for x
   x = 70,862,440,000/123,500
6. Step 6: Final answer
   x = 573,784.94