Finding the Third Proportional to 71,319.50 and 111,068.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,319.50 : 111,068.50 = 111,068.50 : x
2. Step 2: Convert to fraction form
   71,319.50/111,068.50 = 111,068.50/x
3. Step 3: Cross multiply
   71,319.50x = 111,068.50 × 111,068.50
4. Step 4: Simplify right side
   71,319.50x = 12,336,211,692.25
5. Step 5: Solve for x
   x = 12,336,211,692.25/71,319.50
6. Step 6: Final answer
   x = 172,971.09