Finding the Third Proportional to 55,317 and 74,223

Step by Step Solution

1. Step 1: Write the proportion equation
   55,317 : 74,223 = 74,223 : x
2. Step 2: Convert to fraction form
   55,317/74,223 = 74,223/x
3. Step 3: Cross multiply
   55,317x = 74,223 × 74,223
4. Step 4: Simplify right side
   55,317x = 5,509,053,729
5. Step 5: Solve for x
   x = 5,509,053,729/55,317
6. Step 6: Final answer
   x = 99,590.61