Finding the Third Proportional to 666,309 and 1,456,890

Step by Step Solution

1. Step 1: Write the proportion equation
   666,309 : 1,456,890 = 1,456,890 : x
2. Step 2: Convert to fraction form
   666,309/1,456,890 = 1,456,890/x
3. Step 3: Cross multiply
   666,309x = 1,456,890 × 1,456,890
4. Step 4: Simplify right side
   666,309x = 2,122,528,472,100
5. Step 5: Solve for x
   x = 2,122,528,472,100/666,309
6. Step 6: Final answer
   x = 3,185,501.73