Finding the Third Proportional to 47,420 and 69,180

Step by Step Solution

1. Step 1: Write the proportion equation
   47,420 : 69,180 = 69,180 : x
2. Step 2: Convert to fraction form
   47,420/69,180 = 69,180/x
3. Step 3: Cross multiply
   47,420x = 69,180 × 69,180
4. Step 4: Simplify right side
   47,420x = 4,785,872,400
5. Step 5: Solve for x
   x = 4,785,872,400/47,420
6. Step 6: Final answer
   x = 100,925.19