Finding the Third Proportional to 131,154 and 287,526

Step by Step Solution

1. Step 1: Write the proportion equation
   131,154 : 287,526 = 287,526 : x
2. Step 2: Convert to fraction form
   131,154/287,526 = 287,526/x
3. Step 3: Cross multiply
   131,154x = 287,526 × 287,526
4. Step 4: Simplify right side
   131,154x = 82,671,200,676
5. Step 5: Solve for x
   x = 82,671,200,676/131,154
6. Step 6: Final answer
   x = 630,336.86