Finding the Third Proportional to 645,742 and 1,007,856

Step by Step Solution

1. Step 1: Write the proportion equation
   645,742 : 1,007,856 = 1,007,856 : x
2. Step 2: Convert to fraction form
   645,742/1,007,856 = 1,007,856/x
3. Step 3: Cross multiply
   645,742x = 1,007,856 × 1,007,856
4. Step 4: Simplify right side
   645,742x = 1,015,773,716,736
5. Step 5: Solve for x
   x = 1,015,773,716,736/645,742
6. Step 6: Final answer
   x = 1,573,033.37