Finding the Third Proportional to 645,840 and 996,012

Step by Step Solution

1. Step 1: Write the proportion equation
   645,840 : 996,012 = 996,012 : x
2. Step 2: Convert to fraction form
   645,840/996,012 = 996,012/x
3. Step 3: Cross multiply
   645,840x = 996,012 × 996,012
4. Step 4: Simplify right side
   645,840x = 992,039,904,144
5. Step 5: Solve for x
   x = 992,039,904,144/645,840
6. Step 6: Final answer
   x = 1,536,045.93