Finding the Third Proportional to 1,392,361.31 and 2,215,519.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,361.31 : 2,215,519.59 = 2,215,519.59 : x
2. Step 2: Convert to fraction form
   1,392,361.31/2,215,519.59 = 2,215,519.59/x
3. Step 3: Cross multiply
   1,392,361.31x = 2,215,519.59 × 2,215,519.59
4. Step 4: Simplify right side
   1,392,361.31x = 4,908,527,070,290.17
5. Step 5: Solve for x
   x = 4,908,527,070,290.17/1,392,361.31
6. Step 6: Final answer
   x = 3,525,325.67