Finding the Third Proportional to 978,660 and 2,149,776

Step by Step Solution

1. Step 1: Write the proportion equation
   978,660 : 2,149,776 = 2,149,776 : x
2. Step 2: Convert to fraction form
   978,660/2,149,776 = 2,149,776/x
3. Step 3: Cross multiply
   978,660x = 2,149,776 × 2,149,776
4. Step 4: Simplify right side
   978,660x = 4,621,536,850,176
5. Step 5: Solve for x
   x = 4,621,536,850,176/978,660
6. Step 6: Final answer
   x = 4,722,310.97