Finding the Third Proportional to 978,692 and 2,156,059

Step by Step Solution

1. Step 1: Write the proportion equation
   978,692 : 2,156,059 = 2,156,059 : x
2. Step 2: Convert to fraction form
   978,692/2,156,059 = 2,156,059/x
3. Step 3: Cross multiply
   978,692x = 2,156,059 × 2,156,059
4. Step 4: Simplify right side
   978,692x = 4,648,590,411,481
5. Step 5: Solve for x
   x = 4,648,590,411,481/978,692
6. Step 6: Final answer
   x = 4,749,799.13