Finding the Third Proportional to 3,570,256 and 7,720,640

Step by Step Solution

1. Step 1: Write the proportion equation
   3,570,256 : 7,720,640 = 7,720,640 : x
2. Step 2: Convert to fraction form
   3,570,256/7,720,640 = 7,720,640/x
3. Step 3: Cross multiply
   3,570,256x = 7,720,640 × 7,720,640
4. Step 4: Simplify right side
   3,570,256x = 59,608,282,009,600
5. Step 5: Solve for x
   x = 59,608,282,009,600/3,570,256
6. Step 6: Final answer
   x = 16,695,800.53