Finding the Third Proportional to 1,215,248 and 2,659,320

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,248 : 2,659,320 = 2,659,320 : x
2. Step 2: Convert to fraction form
   1,215,248/2,659,320 = 2,659,320/x
3. Step 3: Cross multiply
   1,215,248x = 2,659,320 × 2,659,320
4. Step 4: Simplify right side
   1,215,248x = 7,071,982,862,400
5. Step 5: Solve for x
   x = 7,071,982,862,400/1,215,248
6. Step 6: Final answer
   x = 5,819,374.20