Finding the Third Proportional to 131,624 and 286,608

Step by Step Solution

1. Step 1: Write the proportion equation
   131,624 : 286,608 = 286,608 : x
2. Step 2: Convert to fraction form
   131,624/286,608 = 286,608/x
3. Step 3: Cross multiply
   131,624x = 286,608 × 286,608
4. Step 4: Simplify right side
   131,624x = 82,144,145,664
5. Step 5: Solve for x
   x = 82,144,145,664/131,624
6. Step 6: Final answer
   x = 624,081.82