Finding the Third Proportional to 111,573 and 156,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,573 : 156,055.50 = 156,055.50 : x
2. Step 2: Convert to fraction form
   111,573/156,055.50 = 156,055.50/x
3. Step 3: Cross multiply
   111,573x = 156,055.50 × 156,055.50
4. Step 4: Simplify right side
   111,573x = 24,353,319,080.25
5. Step 5: Solve for x
   x = 24,353,319,080.25/111,573
6. Step 6: Final answer
   x = 218,272.51