Finding the Third Proportional to 123,979.50 and 267,637.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,979.50 : 267,637.50 = 267,637.50 : x
2. Step 2: Convert to fraction form
   123,979.50/267,637.50 = 267,637.50/x
3. Step 3: Cross multiply
   123,979.50x = 267,637.50 × 267,637.50
4. Step 4: Simplify right side
   123,979.50x = 71,629,831,406.25
5. Step 5: Solve for x
   x = 71,629,831,406.25/123,979.50
6. Step 6: Final answer
   x = 577,755.45