Finding the Third Proportional to 54,155 and 112,643

Step by Step Solution

1. Step 1: Write the proportion equation
   54,155 : 112,643 = 112,643 : x
2. Step 2: Convert to fraction form
   54,155/112,643 = 112,643/x
3. Step 3: Cross multiply
   54,155x = 112,643 × 112,643
4. Step 4: Simplify right side
   54,155x = 12,688,445,449
5. Step 5: Solve for x
   x = 12,688,445,449/54,155
6. Step 6: Final answer
   x = 234,298.69