Finding the Third Proportional to 131,182 and 286,988

Step by Step Solution

1. Step 1: Write the proportion equation
   131,182 : 286,988 = 286,988 : x
2. Step 2: Convert to fraction form
   131,182/286,988 = 286,988/x
3. Step 3: Cross multiply
   131,182x = 286,988 × 286,988
4. Step 4: Simplify right side
   131,182x = 82,362,112,144
5. Step 5: Solve for x
   x = 82,362,112,144/131,182
6. Step 6: Final answer
   x = 627,846.14