Finding the Third Proportional to 123,237 and 252,315

Step by Step Solution

1. Step 1: Write the proportion equation
   123,237 : 252,315 = 252,315 : x
2. Step 2: Convert to fraction form
   123,237/252,315 = 252,315/x
3. Step 3: Cross multiply
   123,237x = 252,315 × 252,315
4. Step 4: Simplify right side
   123,237x = 63,662,859,225
5. Step 5: Solve for x
   x = 63,662,859,225/123,237
6. Step 6: Final answer
   x = 516,588.84