Finding the Third Proportional to 398,756.67 and 875,017.69

Step by Step Solution

1. Step 1: Write the proportion equation
   398,756.67 : 875,017.69 = 875,017.69 : x
2. Step 2: Convert to fraction form
   398,756.67/875,017.69 = 875,017.69/x
3. Step 3: Cross multiply
   398,756.67x = 875,017.69 × 875,017.69
4. Step 4: Simplify right side
   398,756.67x = 765,655,953,437.85
5. Step 5: Solve for x
   x = 765,655,953,437.85/398,756.67
6. Step 6: Final answer
   x = 1,920,108.19