Finding the Third Proportional to 986,738 and 2,156,089

Step by Step Solution

1. Step 1: Write the proportion equation
   986,738 : 2,156,089 = 2,156,089 : x
2. Step 2: Convert to fraction form
   986,738/2,156,089 = 2,156,089/x
3. Step 3: Cross multiply
   986,738x = 2,156,089 × 2,156,089
4. Step 4: Simplify right side
   986,738x = 4,648,719,775,921
5. Step 5: Solve for x
   x = 4,648,719,775,921/986,738
6. Step 6: Final answer
   x = 4,711,199.71