Finding the Third Proportional to 199,822.50 and 427,986

Step by Step Solution

1. Step 1: Write the proportion equation
   199,822.50 : 427,986 = 427,986 : x
2. Step 2: Convert to fraction form
   199,822.50/427,986 = 427,986/x
3. Step 3: Cross multiply
   199,822.50x = 427,986 × 427,986
4. Step 4: Simplify right side
   199,822.50x = 183,172,016,196
5. Step 5: Solve for x
   x = 183,172,016,196/199,822.50
6. Step 6: Final answer
   x = 916,673.63