Finding the Third Proportional to 640,352 and 1,380,016

Step by Step Solution

1. Step 1: Write the proportion equation
   640,352 : 1,380,016 = 1,380,016 : x
2. Step 2: Convert to fraction form
   640,352/1,380,016 = 1,380,016/x
3. Step 3: Cross multiply
   640,352x = 1,380,016 × 1,380,016
4. Step 4: Simplify right side
   640,352x = 1,904,444,160,256
5. Step 5: Solve for x
   x = 1,904,444,160,256/640,352
6. Step 6: Final answer
   x = 2,974,058.27