Finding the Third Proportional to 3,680,820 and 7,540,128

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680,820 : 7,540,128 = 7,540,128 : x
2. Step 2: Convert to fraction form
   3,680,820/7,540,128 = 7,540,128/x
3. Step 3: Cross multiply
   3,680,820x = 7,540,128 × 7,540,128
4. Step 4: Simplify right side
   3,680,820x = 56,853,530,256,384
5. Step 5: Solve for x
   x = 56,853,530,256,384/3,680,820
6. Step 6: Final answer
   x = 15,445,887.13