Finding the Third Proportional to 1,638,330 and 3,591,589.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,330 : 3,591,589.50 = 3,591,589.50 : x
2. Step 2: Convert to fraction form
   1,638,330/3,591,589.50 = 3,591,589.50/x
3. Step 3: Cross multiply
   1,638,330x = 3,591,589.50 × 3,591,589.50
4. Step 4: Simplify right side
   1,638,330x = 12,899,515,136,510.25
5. Step 5: Solve for x
   x = 12,899,515,136,510.25/1,638,330
6. Step 6: Final answer
   x = 7,873,575.61