Finding the Third Proportional to 220,716 and 341,691.75

Step by Step Solution

1. Step 1: Write the proportion equation
   220,716 : 341,691.75 = 341,691.75 : x
2. Step 2: Convert to fraction form
   220,716/341,691.75 = 341,691.75/x
3. Step 3: Cross multiply
   220,716x = 341,691.75 × 341,691.75
4. Step 4: Simplify right side
   220,716x = 116,753,252,018.06
5. Step 5: Solve for x
   x = 116,753,252,018.06/220,716
6. Step 6: Final answer
   x = 528,975.03