Finding the Third Proportional to 988,575 and 2,157,578

Step by Step Solution

1. Step 1: Write the proportion equation
   988,575 : 2,157,578 = 2,157,578 : x
2. Step 2: Convert to fraction form
   988,575/2,157,578 = 2,157,578/x
3. Step 3: Cross multiply
   988,575x = 2,157,578 × 2,157,578
4. Step 4: Simplify right side
   988,575x = 4,655,142,826,084
5. Step 5: Solve for x
   x = 4,655,142,826,084/988,575
6. Step 6: Final answer
   x = 4,708,942.49