Finding the Third Proportional to 248,484 and 331,056.75

Step by Step Solution

1. Step 1: Write the proportion equation
   248,484 : 331,056.75 = 331,056.75 : x
2. Step 2: Convert to fraction form
   248,484/331,056.75 = 331,056.75/x
3. Step 3: Cross multiply
   248,484x = 331,056.75 × 331,056.75
4. Step 4: Simplify right side
   248,484x = 109,598,571,720.56
5. Step 5: Solve for x
   x = 109,598,571,720.56/248,484
6. Step 6: Final answer
   x = 441,068.93