Finding the Third Proportional to 986,418 and 2,155,476

Step by Step Solution

1. Step 1: Write the proportion equation
   986,418 : 2,155,476 = 2,155,476 : x
2. Step 2: Convert to fraction form
   986,418/2,155,476 = 2,155,476/x
3. Step 3: Cross multiply
   986,418x = 2,155,476 × 2,155,476
4. Step 4: Simplify right side
   986,418x = 4,646,076,786,576
5. Step 5: Solve for x
   x = 4,646,076,786,576/986,418
6. Step 6: Final answer
   x = 4,710,048.67