Finding the Third Proportional to 2,589,429 and 3,920,128.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,589,429 : 3,920,128.50 = 3,920,128.50 : x
2. Step 2: Convert to fraction form
   2,589,429/3,920,128.50 = 3,920,128.50/x
3. Step 3: Cross multiply
   2,589,429x = 3,920,128.50 × 3,920,128.50
4. Step 4: Simplify right side
   2,589,429x = 15,367,407,456,512.25
5. Step 5: Solve for x
   x = 15,367,407,456,512.25/2,589,429
6. Step 6: Final answer
   x = 5,934,670.33