Finding the Third Proportional to 640,632 and 982,665

Step by Step Solution

1. Step 1: Write the proportion equation
   640,632 : 982,665 = 982,665 : x
2. Step 2: Convert to fraction form
   640,632/982,665 = 982,665/x
3. Step 3: Cross multiply
   640,632x = 982,665 × 982,665
4. Step 4: Simplify right side
   640,632x = 965,630,502,225
5. Step 5: Solve for x
   x = 965,630,502,225/640,632
6. Step 6: Final answer
   x = 1,507,309.19