Finding the Third Proportional to 56,384 and 122,490

Step by Step Solution

1. Step 1: Write the proportion equation
   56,384 : 122,490 = 122,490 : x
2. Step 2: Convert to fraction form
   56,384/122,490 = 122,490/x
3. Step 3: Cross multiply
   56,384x = 122,490 × 122,490
4. Step 4: Simplify right side
   56,384x = 15,003,800,100
5. Step 5: Solve for x
   x = 15,003,800,100/56,384
6. Step 6: Final answer
   x = 266,100.31