Finding the Third Proportional to 1,137,388 and 2,405,240

Step by Step Solution

1. Step 1: Write the proportion equation
   1,137,388 : 2,405,240 = 2,405,240 : x
2. Step 2: Convert to fraction form
   1,137,388/2,405,240 = 2,405,240/x
3. Step 3: Cross multiply
   1,137,388x = 2,405,240 × 2,405,240
4. Step 4: Simplify right side
   1,137,388x = 5,785,179,457,600
5. Step 5: Solve for x
   x = 5,785,179,457,600/1,137,388
6. Step 6: Final answer
   x = 5,086,372.86