Finding the Third Proportional to 661,972 and 1,428,890

Step by Step Solution

1. Step 1: Write the proportion equation
   661,972 : 1,428,890 = 1,428,890 : x
2. Step 2: Convert to fraction form
   661,972/1,428,890 = 1,428,890/x
3. Step 3: Cross multiply
   661,972x = 1,428,890 × 1,428,890
4. Step 4: Simplify right side
   661,972x = 2,041,726,632,100
5. Step 5: Solve for x
   x = 2,041,726,632,100/661,972
6. Step 6: Final answer
   x = 3,084,309.66