Finding the Third Proportional to 392,742 and 845,606.25

Step by Step Solution

1. Step 1: Write the proportion equation
   392,742 : 845,606.25 = 845,606.25 : x
2. Step 2: Convert to fraction form
   392,742/845,606.25 = 845,606.25/x
3. Step 3: Cross multiply
   392,742x = 845,606.25 × 845,606.25
4. Step 4: Simplify right side
   392,742x = 715,049,930,039.06
5. Step 5: Solve for x
   x = 715,049,930,039.06/392,742
6. Step 6: Final answer
   x = 1,820,660.71