Finding the Third Proportional to 1,708,820 and 3,638,500

Step by Step Solution

1. Step 1: Write the proportion equation
   1,708,820 : 3,638,500 = 3,638,500 : x
2. Step 2: Convert to fraction form
   1,708,820/3,638,500 = 3,638,500/x
3. Step 3: Cross multiply
   1,708,820x = 3,638,500 × 3,638,500
4. Step 4: Simplify right side
   1,708,820x = 13,238,682,250,000
5. Step 5: Solve for x
   x = 13,238,682,250,000/1,708,820
6. Step 6: Final answer
   x = 7,747,265.51