Finding the Third Proportional to 661,984 and 992,760

Step by Step Solution

1. Step 1: Write the proportion equation
   661,984 : 992,760 = 992,760 : x
2. Step 2: Convert to fraction form
   661,984/992,760 = 992,760/x
3. Step 3: Cross multiply
   661,984x = 992,760 × 992,760
4. Step 4: Simplify right side
   661,984x = 985,572,417,600
5. Step 5: Solve for x
   x = 985,572,417,600/661,984
6. Step 6: Final answer
   x = 1,488,816.07