Finding the Third Proportional to 1,186,638 and 2,457,384

Step by Step Solution

1. Step 1: Write the proportion equation
   1,186,638 : 2,457,384 = 2,457,384 : x
2. Step 2: Convert to fraction form
   1,186,638/2,457,384 = 2,457,384/x
3. Step 3: Cross multiply
   1,186,638x = 2,457,384 × 2,457,384
4. Step 4: Simplify right side
   1,186,638x = 6,038,736,123,456
5. Step 5: Solve for x
   x = 6,038,736,123,456/1,186,638
6. Step 6: Final answer
   x = 5,088,945.51