Finding the Third Proportional to 46,621 and 72,320

Step by Step Solution

1. Step 1: Write the proportion equation
   46,621 : 72,320 = 72,320 : x
2. Step 2: Convert to fraction form
   46,621/72,320 = 72,320/x
3. Step 3: Cross multiply
   46,621x = 72,320 × 72,320
4. Step 4: Simplify right side
   46,621x = 5,230,182,400
5. Step 5: Solve for x
   x = 5,230,182,400/46,621
6. Step 6: Final answer
   x = 112,185.12