Finding the Third Proportional to 111,457 and 171,073.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,457 : 171,073.50 = 171,073.50 : x
2. Step 2: Convert to fraction form
   111,457/171,073.50 = 171,073.50/x
3. Step 3: Cross multiply
   111,457x = 171,073.50 × 171,073.50
4. Step 4: Simplify right side
   111,457x = 29,266,142,402.25
5. Step 5: Solve for x
   x = 29,266,142,402.25/111,457
6. Step 6: Final answer
   x = 262,577.88