Finding the Third Proportional to 132,740 and 288,810

Step by Step Solution

1. Step 1: Write the proportion equation
   132,740 : 288,810 = 288,810 : x
2. Step 2: Convert to fraction form
   132,740/288,810 = 288,810/x
3. Step 3: Cross multiply
   132,740x = 288,810 × 288,810
4. Step 4: Simplify right side
   132,740x = 83,411,216,100
5. Step 5: Solve for x
   x = 83,411,216,100/132,740
6. Step 6: Final answer
   x = 628,380.41