Finding the Third Proportional to 715,422 and 1,555,090

Step by Step Solution

1. Step 1: Write the proportion equation
   715,422 : 1,555,090 = 1,555,090 : x
2. Step 2: Convert to fraction form
   715,422/1,555,090 = 1,555,090/x
3. Step 3: Cross multiply
   715,422x = 1,555,090 × 1,555,090
4. Step 4: Simplify right side
   715,422x = 2,418,304,908,100
5. Step 5: Solve for x
   x = 2,418,304,908,100/715,422
6. Step 6: Final answer
   x = 3,380,249.57