Finding the Third Proportional to 55,443 and 83,743.50

Step by Step Solution

1. Step 1: Write the proportion equation
   55,443 : 83,743.50 = 83,743.50 : x
2. Step 2: Convert to fraction form
   55,443/83,743.50 = 83,743.50/x
3. Step 3: Cross multiply
   55,443x = 83,743.50 × 83,743.50
4. Step 4: Simplify right side
   55,443x = 7,012,973,792.25
5. Step 5: Solve for x
   x = 7,012,973,792.25/55,443
6. Step 6: Final answer
   x = 126,489.80