Finding the Third Proportional to 402,558 and 876,120.75

Step by Step Solution

1. Step 1: Write the proportion equation
   402,558 : 876,120.75 = 876,120.75 : x
2. Step 2: Convert to fraction form
   402,558/876,120.75 = 876,120.75/x
3. Step 3: Cross multiply
   402,558x = 876,120.75 × 876,120.75
4. Step 4: Simplify right side
   402,558x = 767,587,568,580.56
5. Step 5: Solve for x
   x = 767,587,568,580.56/402,558
6. Step 6: Final answer
   x = 1,906,775.09