Finding the Third Proportional to 978,645 and 2,149,746

Step by Step Solution

1. Step 1: Write the proportion equation
   978,645 : 2,149,746 = 2,149,746 : x
2. Step 2: Convert to fraction form
   978,645/2,149,746 = 2,149,746/x
3. Step 3: Cross multiply
   978,645x = 2,149,746 × 2,149,746
4. Step 4: Simplify right side
   978,645x = 4,621,407,864,516
5. Step 5: Solve for x
   x = 4,621,407,864,516/978,645
6. Step 6: Final answer
   x = 4,722,251.55