Finding the Third Proportional to 215,508 and 468,780

Step by Step Solution

1. Step 1: Write the proportion equation
   215,508 : 468,780 = 468,780 : x
2. Step 2: Convert to fraction form
   215,508/468,780 = 468,780/x
3. Step 3: Cross multiply
   215,508x = 468,780 × 468,780
4. Step 4: Simplify right side
   215,508x = 219,754,688,400
5. Step 5: Solve for x
   x = 219,754,688,400/215,508
6. Step 6: Final answer
   x = 1,019,705.48