Finding the Third Proportional to 123,124.50 and 201,028.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,124.50 : 201,028.50 = 201,028.50 : x
2. Step 2: Convert to fraction form
   123,124.50/201,028.50 = 201,028.50/x
3. Step 3: Cross multiply
   123,124.50x = 201,028.50 × 201,028.50
4. Step 4: Simplify right side
   123,124.50x = 40,412,457,812.25
5. Step 5: Solve for x
   x = 40,412,457,812.25/123,124.50
6. Step 6: Final answer
   x = 328,224.34