Finding the Third Proportional to 250,653 and 521,961

Step by Step Solution

1. Step 1: Write the proportion equation
   250,653 : 521,961 = 521,961 : x
2. Step 2: Convert to fraction form
   250,653/521,961 = 521,961/x
3. Step 3: Cross multiply
   250,653x = 521,961 × 521,961
4. Step 4: Simplify right side
   250,653x = 272,443,285,521
5. Step 5: Solve for x
   x = 272,443,285,521/250,653
6. Step 6: Final answer
   x = 1,086,934.07