Finding the Third Proportional to 661,405 and 1,432,680

Step by Step Solution

1. Step 1: Write the proportion equation
   661,405 : 1,432,680 = 1,432,680 : x
2. Step 2: Convert to fraction form
   661,405/1,432,680 = 1,432,680/x
3. Step 3: Cross multiply
   661,405x = 1,432,680 × 1,432,680
4. Step 4: Simplify right side
   661,405x = 2,052,571,982,400
5. Step 5: Solve for x
   x = 2,052,571,982,400/661,405
6. Step 6: Final answer
   x = 3,103,351.17