Finding the Third Proportional to 51,087 and 84,424.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,087 : 84,424.50 = 84,424.50 : x
2. Step 2: Convert to fraction form
   51,087/84,424.50 = 84,424.50/x
3. Step 3: Cross multiply
   51,087x = 84,424.50 × 84,424.50
4. Step 4: Simplify right side
   51,087x = 7,127,496,200.25
5. Step 5: Solve for x
   x = 7,127,496,200.25/51,087
6. Step 6: Final answer
   x = 139,516.83