Finding the Third Proportional to 1,620,280 and 3,545,544

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620,280 : 3,545,544 = 3,545,544 : x
2. Step 2: Convert to fraction form
   1,620,280/3,545,544 = 3,545,544/x
3. Step 3: Cross multiply
   1,620,280x = 3,545,544 × 3,545,544
4. Step 4: Simplify right side
   1,620,280x = 12,570,882,255,936
5. Step 5: Solve for x
   x = 12,570,882,255,936/1,620,280
6. Step 6: Final answer
   x = 7,758,462.89