Finding the Third Proportional to 1,621,472 and 3,554,272

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,472 : 3,554,272 = 3,554,272 : x
2. Step 2: Convert to fraction form
   1,621,472/3,554,272 = 3,554,272/x
3. Step 3: Cross multiply
   1,621,472x = 3,554,272 × 3,554,272
4. Step 4: Simplify right side
   1,621,472x = 12,632,849,449,984
5. Step 5: Solve for x
   x = 12,632,849,449,984/1,621,472
6. Step 6: Final answer
   x = 7,790,976.01