Finding the Third Proportional to 1,215,146 and 2,659,135

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,146 : 2,659,135 = 2,659,135 : x
2. Step 2: Convert to fraction form
   1,215,146/2,659,135 = 2,659,135/x
3. Step 3: Cross multiply
   1,215,146x = 2,659,135 × 2,659,135
4. Step 4: Simplify right side
   1,215,146x = 7,070,998,948,225
5. Step 5: Solve for x
   x = 7,070,998,948,225/1,215,146
6. Step 6: Final answer
   x = 5,819,052.98