Finding the Third Proportional to 228,156 and 488,280

Step by Step Solution

1. Step 1: Write the proportion equation
   228,156 : 488,280 = 488,280 : x
2. Step 2: Convert to fraction form
   228,156/488,280 = 488,280/x
3. Step 3: Cross multiply
   228,156x = 488,280 × 488,280
4. Step 4: Simplify right side
   228,156x = 238,417,358,400
5. Step 5: Solve for x
   x = 238,417,358,400/228,156
6. Step 6: Final answer
   x = 1,044,975.19