Finding the Third Proportional to 168,388.50 and 266,586

Step by Step Solution

1. Step 1: Write the proportion equation
   168,388.50 : 266,586 = 266,586 : x
2. Step 2: Convert to fraction form
   168,388.50/266,586 = 266,586/x
3. Step 3: Cross multiply
   168,388.50x = 266,586 × 266,586
4. Step 4: Simplify right side
   168,388.50x = 71,068,095,396
5. Step 5: Solve for x
   x = 71,068,095,396/168,388.50
6. Step 6: Final answer
   x = 422,048.39