Finding the Third Proportional to 215,608.50 and 468,909

Step by Step Solution

1. Step 1: Write the proportion equation
   215,608.50 : 468,909 = 468,909 : x
2. Step 2: Convert to fraction form
   215,608.50/468,909 = 468,909/x
3. Step 3: Cross multiply
   215,608.50x = 468,909 × 468,909
4. Step 4: Simplify right side
   215,608.50x = 219,875,650,281
5. Step 5: Solve for x
   x = 219,875,650,281/215,608.50
6. Step 6: Final answer
   x = 1,019,791.20