Finding the Third Proportional to 590,886 and 916,679.25

Step by Step Solution

1. Step 1: Write the proportion equation
   590,886 : 916,679.25 = 916,679.25 : x
2. Step 2: Convert to fraction form
   590,886/916,679.25 = 916,679.25/x
3. Step 3: Cross multiply
   590,886x = 916,679.25 × 916,679.25
4. Step 4: Simplify right side
   590,886x = 840,300,847,380.56
5. Step 5: Solve for x
   x = 840,300,847,380.56/590,886
6. Step 6: Final answer
   x = 1,422,103.16