Finding the Third Proportional to 132,807 and 287,738

Step by Step Solution

1. Step 1: Write the proportion equation
   132,807 : 287,738 = 287,738 : x
2. Step 2: Convert to fraction form
   132,807/287,738 = 287,738/x
3. Step 3: Cross multiply
   132,807x = 287,738 × 287,738
4. Step 4: Simplify right side
   132,807x = 82,793,156,644
5. Step 5: Solve for x
   x = 82,793,156,644/132,807
6. Step 6: Final answer
   x = 623,409.58