Finding the Third Proportional to 162,549 and 217,417.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,549 : 217,417.50 = 217,417.50 : x
2. Step 2: Convert to fraction form
   162,549/217,417.50 = 217,417.50/x
3. Step 3: Cross multiply
   162,549x = 217,417.50 × 217,417.50
4. Step 4: Simplify right side
   162,549x = 47,270,369,306.25
5. Step 5: Solve for x
   x = 47,270,369,306.25/162,549
6. Step 6: Final answer
   x = 290,806.89