Finding the Third Proportional to 639,848 and 1,400,224

Step by Step Solution

1. Step 1: Write the proportion equation
   639,848 : 1,400,224 = 1,400,224 : x
2. Step 2: Convert to fraction form
   639,848/1,400,224 = 1,400,224/x
3. Step 3: Cross multiply
   639,848x = 1,400,224 × 1,400,224
4. Step 4: Simplify right side
   639,848x = 1,960,627,250,176
5. Step 5: Solve for x
   x = 1,960,627,250,176/639,848
6. Step 6: Final answer
   x = 3,064,207.83