Finding the Third Proportional to 402,502.50 and 879,636

Step by Step Solution

1. Step 1: Write the proportion equation
   402,502.50 : 879,636 = 879,636 : x
2. Step 2: Convert to fraction form
   402,502.50/879,636 = 879,636/x
3. Step 3: Cross multiply
   402,502.50x = 879,636 × 879,636
4. Step 4: Simplify right side
   402,502.50x = 773,759,492,496
5. Step 5: Solve for x
   x = 773,759,492,496/402,502.50
6. Step 6: Final answer
   x = 1,922,371.89