Finding the Third Proportional to 240,736 and 521,648

Step by Step Solution

1. Step 1: Write the proportion equation
   240,736 : 521,648 = 521,648 : x
2. Step 2: Convert to fraction form
   240,736/521,648 = 521,648/x
3. Step 3: Cross multiply
   240,736x = 521,648 × 521,648
4. Step 4: Simplify right side
   240,736x = 272,116,635,904
5. Step 5: Solve for x
   x = 272,116,635,904/240,736
6. Step 6: Final answer
   x = 1,130,352.90