Finding the Third Proportional to 56,473.45 and 87,443.30

Step by Step Solution

1. Step 1: Write the proportion equation
   56,473.45 : 87,443.30 = 87,443.30 : x
2. Step 2: Convert to fraction form
   56,473.45/87,443.30 = 87,443.30/x
3. Step 3: Cross multiply
   56,473.45x = 87,443.30 × 87,443.30
4. Step 4: Simplify right side
   56,473.45x = 7,646,330,168.37
5. Step 5: Solve for x
   x = 7,646,330,168.37/56,473.45
6. Step 6: Final answer
   x = 135,396.89