Finding the Third Proportional to 72,429.19 and 100,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,429.19 : 100,480.50 = 100,480.50 : x
2. Step 2: Convert to fraction form
   72,429.19/100,480.50 = 100,480.50/x
3. Step 3: Cross multiply
   72,429.19x = 100,480.50 × 100,480.50
4. Step 4: Simplify right side
   72,429.19x = 10,096,330,880.25
5. Step 5: Solve for x
   x = 10,096,330,880.25/72,429.19
6. Step 6: Final answer
   x = 139,395.89