Finding the Third Proportional to 619,348 and 872,152

Step by Step Solution

1. Step 1: Write the proportion equation
   619,348 : 872,152 = 872,152 : x
2. Step 2: Convert to fraction form
   619,348/872,152 = 872,152/x
3. Step 3: Cross multiply
   619,348x = 872,152 × 872,152
4. Step 4: Simplify right side
   619,348x = 760,649,111,104
5. Step 5: Solve for x
   x = 760,649,111,104/619,348
6. Step 6: Final answer
   x = 1,228,144.94