Finding the Third Proportional to 25,278 and 56,172

Step by Step Solution

1. Step 1: Write the proportion equation
   25,278 : 56,172 = 56,172 : x
2. Step 2: Convert to fraction form
   25,278/56,172 = 56,172/x
3. Step 3: Cross multiply
   25,278x = 56,172 × 56,172
4. Step 4: Simplify right side
   25,278x = 3,155,293,584
5. Step 5: Solve for x
   x = 3,155,293,584/25,278
6. Step 6: Final answer
   x = 124,823.70