Finding the Third Proportional to 111,559.50 and 156,037.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,559.50 : 156,037.50 = 156,037.50 : x
2. Step 2: Convert to fraction form
   111,559.50/156,037.50 = 156,037.50/x
3. Step 3: Cross multiply
   111,559.50x = 156,037.50 × 156,037.50
4. Step 4: Simplify right side
   111,559.50x = 24,347,701,406.25
5. Step 5: Solve for x
   x = 24,347,701,406.25/111,559.50
6. Step 6: Final answer
   x = 218,248.57