Finding the Third Proportional to 69,621 and 147,180

Step by Step Solution

1. Step 1: Write the proportion equation
   69,621 : 147,180 = 147,180 : x
2. Step 2: Convert to fraction form
   69,621/147,180 = 147,180/x
3. Step 3: Cross multiply
   69,621x = 147,180 × 147,180
4. Step 4: Simplify right side
   69,621x = 21,661,952,400
5. Step 5: Solve for x
   x = 21,661,952,400/69,621
6. Step 6: Final answer
   x = 311,141.07