Finding the Third Proportional to 69,012 and 146,772

Step by Step Solution

1. Step 1: Write the proportion equation
   69,012 : 146,772 = 146,772 : x
2. Step 2: Convert to fraction form
   69,012/146,772 = 146,772/x
3. Step 3: Cross multiply
   69,012x = 146,772 × 146,772
4. Step 4: Simplify right side
   69,012x = 21,542,019,984
5. Step 5: Solve for x
   x = 21,542,019,984/69,012
6. Step 6: Final answer
   x = 312,148.90