Finding the Third Proportional to 1,554,478 and 3,345,153

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554,478 : 3,345,153 = 3,345,153 : x
2. Step 2: Convert to fraction form
   1,554,478/3,345,153 = 3,345,153/x
3. Step 3: Cross multiply
   1,554,478x = 3,345,153 × 3,345,153
4. Step 4: Simplify right side
   1,554,478x = 11,190,048,593,409
5. Step 5: Solve for x
   x = 11,190,048,593,409/1,554,478
6. Step 6: Final answer
   x = 7,198,589.23