Finding the Third Proportional to 619,222 and 872,010

Step by Step Solution

1. Step 1: Write the proportion equation
   619,222 : 872,010 = 872,010 : x
2. Step 2: Convert to fraction form
   619,222/872,010 = 872,010/x
3. Step 3: Cross multiply
   619,222x = 872,010 × 872,010
4. Step 4: Simplify right side
   619,222x = 760,401,440,100
5. Step 5: Solve for x
   x = 760,401,440,100/619,222
6. Step 6: Final answer
   x = 1,227,994.87