Finding the Third Proportional to 525,444 and 815,274

Step by Step Solution

1. Step 1: Write the proportion equation
   525,444 : 815,274 = 815,274 : x
2. Step 2: Convert to fraction form
   525,444/815,274 = 815,274/x
3. Step 3: Cross multiply
   525,444x = 815,274 × 815,274
4. Step 4: Simplify right side
   525,444x = 664,671,695,076
5. Step 5: Solve for x
   x = 664,671,695,076/525,444
6. Step 6: Final answer
   x = 1,264,971.52