Finding the Third Proportional to 215,941.50 and 445,716

Step by Step Solution

1. Step 1: Write the proportion equation
   215,941.50 : 445,716 = 445,716 : x
2. Step 2: Convert to fraction form
   215,941.50/445,716 = 445,716/x
3. Step 3: Cross multiply
   215,941.50x = 445,716 × 445,716
4. Step 4: Simplify right side
   215,941.50x = 198,662,752,656
5. Step 5: Solve for x
   x = 198,662,752,656/215,941.50
6. Step 6: Final answer
   x = 919,984.13