Finding the Third Proportional to 426,216 and 710,262

Step by Step Solution

1. Step 1: Write the proportion equation
   426,216 : 710,262 = 710,262 : x
2. Step 2: Convert to fraction form
   426,216/710,262 = 710,262/x
3. Step 3: Cross multiply
   426,216x = 710,262 × 710,262
4. Step 4: Simplify right side
   426,216x = 504,472,108,644
5. Step 5: Solve for x
   x = 504,472,108,644/426,216
6. Step 6: Final answer
   x = 1,183,606.69