Finding the Third Proportional to 252,288 and 379,491.75

Step by Step Solution

1. Step 1: Write the proportion equation
   252,288 : 379,491.75 = 379,491.75 : x
2. Step 2: Convert to fraction form
   252,288/379,491.75 = 379,491.75/x
3. Step 3: Cross multiply
   252,288x = 379,491.75 × 379,491.75
4. Step 4: Simplify right side
   252,288x = 144,013,988,318.06
5. Step 5: Solve for x
   x = 144,013,988,318.06/252,288
6. Step 6: Final answer
   x = 570,831.70