Finding the Third Proportional to 156,643.50 and 238,638

Step by Step Solution

1. Step 1: Write the proportion equation
   156,643.50 : 238,638 = 238,638 : x
2. Step 2: Convert to fraction form
   156,643.50/238,638 = 238,638/x
3. Step 3: Cross multiply
   156,643.50x = 238,638 × 238,638
4. Step 4: Simplify right side
   156,643.50x = 56,948,095,044
5. Step 5: Solve for x
   x = 56,948,095,044/156,643.50
6. Step 6: Final answer
   x = 363,552.24