Finding the Third Proportional to 56,446 and 87,448.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,446 : 87,448.50 = 87,448.50 : x
2. Step 2: Convert to fraction form
   56,446/87,448.50 = 87,448.50/x
3. Step 3: Cross multiply
   56,446x = 87,448.50 × 87,448.50
4. Step 4: Simplify right side
   56,446x = 7,647,240,152.25
5. Step 5: Solve for x
   x = 7,647,240,152.25/56,446
6. Step 6: Final answer
   x = 135,478.87