Finding the Third Proportional to 221,836 and 487,916

Step by Step Solution

1. Step 1: Write the proportion equation
   221,836 : 487,916 = 487,916 : x
2. Step 2: Convert to fraction form
   221,836/487,916 = 487,916/x
3. Step 3: Cross multiply
   221,836x = 487,916 × 487,916
4. Step 4: Simplify right side
   221,836x = 238,062,023,056
5. Step 5: Solve for x
   x = 238,062,023,056/221,836
6. Step 6: Final answer
   x = 1,073,144.23