Finding the Third Proportional to 49,321.50 and 72,135.75

Step by Step Solution

1. Step 1: Write the proportion equation
   49,321.50 : 72,135.75 = 72,135.75 : x
2. Step 2: Convert to fraction form
   49,321.50/72,135.75 = 72,135.75/x
3. Step 3: Cross multiply
   49,321.50x = 72,135.75 × 72,135.75
4. Step 4: Simplify right side
   49,321.50x = 5,203,566,428.06
5. Step 5: Solve for x
   x = 5,203,566,428.06/49,321.50
6. Step 6: Final answer
   x = 105,503.00