Finding the Third Proportional to 978,320 and 2,124,270

Step by Step Solution

1. Step 1: Write the proportion equation
   978,320 : 2,124,270 = 2,124,270 : x
2. Step 2: Convert to fraction form
   978,320/2,124,270 = 2,124,270/x
3. Step 3: Cross multiply
   978,320x = 2,124,270 × 2,124,270
4. Step 4: Simplify right side
   978,320x = 4,512,523,032,900
5. Step 5: Solve for x
   x = 4,512,523,032,900/978,320
6. Step 6: Final answer
   x = 4,612,522.52