Finding the Third Proportional to 402,865.50 and 877,659

Step by Step Solution

1. Step 1: Write the proportion equation
   402,865.50 : 877,659 = 877,659 : x
2. Step 2: Convert to fraction form
   402,865.50/877,659 = 877,659/x
3. Step 3: Cross multiply
   402,865.50x = 877,659 × 877,659
4. Step 4: Simplify right side
   402,865.50x = 770,285,320,281
5. Step 5: Solve for x
   x = 770,285,320,281/402,865.50
6. Step 6: Final answer
   x = 1,912,016.10