Finding the Third Proportional to 443,803.50 and 721,035

Step by Step Solution

1. Step 1: Write the proportion equation
   443,803.50 : 721,035 = 721,035 : x
2. Step 2: Convert to fraction form
   443,803.50/721,035 = 721,035/x
3. Step 3: Cross multiply
   443,803.50x = 721,035 × 721,035
4. Step 4: Simplify right side
   443,803.50x = 519,891,471,225
5. Step 5: Solve for x
   x = 519,891,471,225/443,803.50
6. Step 6: Final answer
   x = 1,171,445.18