Finding the Third Proportional to 641,944 and 1,390,928

Step by Step Solution

1. Step 1: Write the proportion equation
   641,944 : 1,390,928 = 1,390,928 : x
2. Step 2: Convert to fraction form
   641,944/1,390,928 = 1,390,928/x
3. Step 3: Cross multiply
   641,944x = 1,390,928 × 1,390,928
4. Step 4: Simplify right side
   641,944x = 1,934,680,701,184
5. Step 5: Solve for x
   x = 1,934,680,701,184/641,944
6. Step 6: Final answer
   x = 3,013,784.23