Finding the Third Proportional to 1,638,348 and 3,591,632

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,348 : 3,591,632 = 3,591,632 : x
2. Step 2: Convert to fraction form
   1,638,348/3,591,632 = 3,591,632/x
3. Step 3: Cross multiply
   1,638,348x = 3,591,632 × 3,591,632
4. Step 4: Simplify right side
   1,638,348x = 12,899,820,423,424
5. Step 5: Solve for x
   x = 12,899,820,423,424/1,638,348
6. Step 6: Final answer
   x = 7,873,675.45