Finding the Third Proportional to 123,048 and 267,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,048 : 267,439.50 = 267,439.50 : x
2. Step 2: Convert to fraction form
   123,048/267,439.50 = 267,439.50/x
3. Step 3: Cross multiply
   123,048x = 267,439.50 × 267,439.50
4. Step 4: Simplify right side
   123,048x = 71,523,886,160.25
5. Step 5: Solve for x
   x = 71,523,886,160.25/123,048
6. Step 6: Final answer
   x = 581,268.17