Finding the Third Proportional to 163,638 and 240,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   163,638 : 240,061.50 = 240,061.50 : x
2. Step 2: Convert to fraction form
   163,638/240,061.50 = 240,061.50/x
3. Step 3: Cross multiply
   163,638x = 240,061.50 × 240,061.50
4. Step 4: Simplify right side
   163,638x = 57,629,523,782.25
5. Step 5: Solve for x
   x = 57,629,523,782.25/163,638
6. Step 6: Final answer
   x = 352,176.90