Finding the Third Proportional to 220,728 and 491,419.50

Step by Step Solution

1. Step 1: Write the proportion equation
   220,728 : 491,419.50 = 491,419.50 : x
2. Step 2: Convert to fraction form
   220,728/491,419.50 = 491,419.50/x
3. Step 3: Cross multiply
   220,728x = 491,419.50 × 491,419.50
4. Step 4: Simplify right side
   220,728x = 241,493,124,980.25
5. Step 5: Solve for x
   x = 241,493,124,980.25/220,728
6. Step 6: Final answer
   x = 1,094,075.63