Finding the Third Proportional to 111,057.50 and 162,421

Step by Step Solution

1. Step 1: Write the proportion equation
   111,057.50 : 162,421 = 162,421 : x
2. Step 2: Convert to fraction form
   111,057.50/162,421 = 162,421/x
3. Step 3: Cross multiply
   111,057.50x = 162,421 × 162,421
4. Step 4: Simplify right side
   111,057.50x = 26,380,581,241
5. Step 5: Solve for x
   x = 26,380,581,241/111,057.50
6. Step 6: Final answer
   x = 237,539.84