Finding the Third Proportional to 638,730 and 1,395,018

Step by Step Solution

1. Step 1: Write the proportion equation
   638,730 : 1,395,018 = 1,395,018 : x
2. Step 2: Convert to fraction form
   638,730/1,395,018 = 1,395,018/x
3. Step 3: Cross multiply
   638,730x = 1,395,018 × 1,395,018
4. Step 4: Simplify right side
   638,730x = 1,946,075,220,324
5. Step 5: Solve for x
   x = 1,946,075,220,324/638,730
6. Step 6: Final answer
   x = 3,046,788.50