Finding the Third Proportional to 203,980.50 and 286,740

Step by Step Solution

1. Step 1: Write the proportion equation
   203,980.50 : 286,740 = 286,740 : x
2. Step 2: Convert to fraction form
   203,980.50/286,740 = 286,740/x
3. Step 3: Cross multiply
   203,980.50x = 286,740 × 286,740
4. Step 4: Simplify right side
   203,980.50x = 82,219,827,600
5. Step 5: Solve for x
   x = 82,219,827,600/203,980.50
6. Step 6: Final answer
   x = 403,076.90