Finding the Third Proportional to 69,768 and 153,144

Step by Step Solution

1. Step 1: Write the proportion equation
   69,768 : 153,144 = 153,144 : x
2. Step 2: Convert to fraction form
   69,768/153,144 = 153,144/x
3. Step 3: Cross multiply
   69,768x = 153,144 × 153,144
4. Step 4: Simplify right side
   69,768x = 23,453,084,736
5. Step 5: Solve for x
   x = 23,453,084,736/69,768
6. Step 6: Final answer
   x = 336,158.19