Finding the Third Proportional to 132,332 and 287,990

Step by Step Solution

1. Step 1: Write the proportion equation
   132,332 : 287,990 = 287,990 : x
2. Step 2: Convert to fraction form
   132,332/287,990 = 287,990/x
3. Step 3: Cross multiply
   132,332x = 287,990 × 287,990
4. Step 4: Simplify right side
   132,332x = 82,938,240,100
5. Step 5: Solve for x
   x = 82,938,240,100/132,332
6. Step 6: Final answer
   x = 626,743.65