Finding the Third Proportional to 231,142 and 497,276

Step by Step Solution

1. Step 1: Write the proportion equation
   231,142 : 497,276 = 497,276 : x
2. Step 2: Convert to fraction form
   231,142/497,276 = 497,276/x
3. Step 3: Cross multiply
   231,142x = 497,276 × 497,276
4. Step 4: Simplify right side
   231,142x = 247,283,420,176
5. Step 5: Solve for x
   x = 247,283,420,176/231,142
6. Step 6: Final answer
   x = 1,069,833.35