Finding the Third Proportional to 56,389.50 and 122,616

Step by Step Solution

1. Step 1: Write the proportion equation
   56,389.50 : 122,616 = 122,616 : x
2. Step 2: Convert to fraction form
   56,389.50/122,616 = 122,616/x
3. Step 3: Cross multiply
   56,389.50x = 122,616 × 122,616
4. Step 4: Simplify right side
   56,389.50x = 15,034,683,456
5. Step 5: Solve for x
   x = 15,034,683,456/56,389.50
6. Step 6: Final answer
   x = 266,622.04