Finding the Third Proportional to 216,909 and 483,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,909 : 483,619.50 = 483,619.50 : x
2. Step 2: Convert to fraction form
   216,909/483,619.50 = 483,619.50/x
3. Step 3: Cross multiply
   216,909x = 483,619.50 × 483,619.50
4. Step 4: Simplify right side
   216,909x = 233,887,820,780.25
5. Step 5: Solve for x
   x = 233,887,820,780.25/216,909
6. Step 6: Final answer
   x = 1,078,276.24