Finding the Third Proportional to 162,118.50 and 258,988

Step by Step Solution

1. Step 1: Write the proportion equation
   162,118.50 : 258,988 = 258,988 : x
2. Step 2: Convert to fraction form
   162,118.50/258,988 = 258,988/x
3. Step 3: Cross multiply
   162,118.50x = 258,988 × 258,988
4. Step 4: Simplify right side
   162,118.50x = 67,074,784,144
5. Step 5: Solve for x
   x = 67,074,784,144/162,118.50
6. Step 6: Final answer
   x = 413,739.23