Finding the Third Proportional to 46,173.80 and 99,728.72

Step by Step Solution

1. Step 1: Write the proportion equation
   46,173.80 : 99,728.72 = 99,728.72 : x
2. Step 2: Convert to fraction form
   46,173.80/99,728.72 = 99,728.72/x
3. Step 3: Cross multiply
   46,173.80x = 99,728.72 × 99,728.72
4. Step 4: Simplify right side
   46,173.80x = 9,945,817,343.52
5. Step 5: Solve for x
   x = 9,945,817,343.52/46,173.80
6. Step 6: Final answer
   x = 215,399.60