Finding the Third Proportional to 647,231 and 1,408,090

Step by Step Solution

1. Step 1: Write the proportion equation
   647,231 : 1,408,090 = 1,408,090 : x
2. Step 2: Convert to fraction form
   647,231/1,408,090 = 1,408,090/x
3. Step 3: Cross multiply
   647,231x = 1,408,090 × 1,408,090
4. Step 4: Simplify right side
   647,231x = 1,982,717,448,100
5. Step 5: Solve for x
   x = 1,982,717,448,100/647,231
6. Step 6: Final answer
   x = 3,063,384.55