Finding the Third Proportional to 55,185.50 and 85,430.88

Step by Step Solution

1. Step 1: Write the proportion equation
   55,185.50 : 85,430.88 = 85,430.88 : x
2. Step 2: Convert to fraction form
   55,185.50/85,430.88 = 85,430.88/x
3. Step 3: Cross multiply
   55,185.50x = 85,430.88 × 85,430.88
4. Step 4: Simplify right side
   55,185.50x = 7,298,434,403.27
5. Step 5: Solve for x
   x = 7,298,434,403.27/55,185.50
6. Step 6: Final answer
   x = 132,252.75