Finding the Third Proportional to 1,781,017 and 4,199,972

Step by Step Solution

1. Step 1: Write the proportion equation
   1,781,017 : 4,199,972 = 4,199,972 : x
2. Step 2: Convert to fraction form
   1,781,017/4,199,972 = 4,199,972/x
3. Step 3: Cross multiply
   1,781,017x = 4,199,972 × 4,199,972
4. Step 4: Simplify right side
   1,781,017x = 17,639,764,800,784
5. Step 5: Solve for x
   x = 17,639,764,800,784/1,781,017
6. Step 6: Final answer
   x = 9,904,321.41