Finding the Third Proportional to 56,555.13 and 87,489.63

Step by Step Solution

1. Step 1: Write the proportion equation
   56,555.13 : 87,489.63 = 87,489.63 : x
2. Step 2: Convert to fraction form
   56,555.13/87,489.63 = 87,489.63/x
3. Step 3: Cross multiply
   56,555.13x = 87,489.63 × 87,489.63
4. Step 4: Simplify right side
   56,555.13x = 7,654,434,482.64
5. Step 5: Solve for x
   x = 7,654,434,482.64/56,555.13
6. Step 6: Final answer
   x = 135,344.67