Finding the Third Proportional to 162,459 and 243,688.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162,459 : 243,688.50 = 243,688.50 : x
2. Step 2: Convert to fraction form
   162,459/243,688.50 = 243,688.50/x
3. Step 3: Cross multiply
   162,459x = 243,688.50 × 243,688.50
4. Step 4: Simplify right side
   162,459x = 59,384,085,032.25
5. Step 5: Solve for x
   x = 59,384,085,032.25/162,459
6. Step 6: Final answer
   x = 365,532.75