Finding the Third Proportional to 978,694 and 2,156,063

Step by Step Solution

1. Step 1: Write the proportion equation
   978,694 : 2,156,063 = 2,156,063 : x
2. Step 2: Convert to fraction form
   978,694/2,156,063 = 2,156,063/x
3. Step 3: Cross multiply
   978,694x = 2,156,063 × 2,156,063
4. Step 4: Simplify right side
   978,694x = 4,648,607,659,969
5. Step 5: Solve for x
   x = 4,648,607,659,969/978,694
6. Step 6: Final answer
   x = 4,749,807.05